While researching a topic, a student has taken the following notes: The human body requires magnesium for over 300 essential processes. Magnesium is a mineral present in many foods. Peanuts contain 49text{ mg/oz} of magnesium. Almonds contain 80text{ mg/oz} . Chia seeds contain 150text{ mg/oz} .

Chia seeds contain 150, mg/oz of magnesium, which is more than peanuts and almonds.

While researching a topic, a student has taken the following notes:The human body requires magnesium for over 300 essential processes.Magnesium...

GMAT Expression of Ideas : (Expression) Questions

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Expression of Ideas

Rhetorical Synthesis

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While researching a topic, a student has taken the following notes:

The human body requires magnesium for over 300 essential processes.
Magnesium is a mineral present in many foods.
Peanuts contain \(49\text{ mg/oz}\) of magnesium.
Almonds contain \(80\text{ mg/oz}\).
Chia seeds contain \(150\text{ mg/oz}\).

The student wants to identify which of the three foods has the highest magnesium content. Which choice most effectively uses relevant information from the notes to accomplish this goal?

At \(80\, \mathrm{mg/oz}\), almonds contain more magnesium than peanuts (\(49\, \mathrm{mg/oz}\)).

Chia seeds contain \(150\, \mathrm{mg/oz}\) of magnesium, which is more than peanuts and almonds.

Magnesium is present in many foods, including peanuts, almonds, and chia seeds.

Peanuts contain \(49\, \mathrm{mg/oz}\) of magnesium, a mineral the human body requires for over \(300\) essential processes.

Solution

Step 1: Decode and Map the Passage

Part A: Create Passage Analysis Table

Text from Passage	Analysis
'The human body requires magnesium for over 300 essential processes.'	What it says: Body needs Mg for \(\mathrm{300+}\) processes What it does: Establishes importance of magnesium What it is: Background context
'Magnesium is a mineral present in many foods.'	What it says: Mg = mineral in many foods What it does: Explains what magnesium is and where it's found What it is: General information
'Peanuts contain 49 milligrams per ounce (mg/oz) of magnesium.'	What it says: Peanuts = \(\mathrm{49\,mg/oz}\) Mg What it does: Provides specific data for peanuts What it is: Quantitative data
'Almonds contain 80 mg/oz.'	What it says: Almonds = \(\mathrm{80\,mg/oz}\) Mg What it does: Provides specific data for almonds What it is: Quantitative data
'Chia seeds contain 150 mg/oz.'	What it says: Chia seeds = \(\mathrm{150\,mg/oz}\) Mg What it does: Provides specific data for chia seeds What it is: Quantitative data

Part B: Provide Passage Architecture & Core Elements

Main Point: The notes present magnesium content data for three foods to enable comparison.

Argument Flow: The notes first establish magnesium's importance and general presence in foods, then provide specific quantitative data for three different foods, allowing for direct numerical comparison of their magnesium content.

Step 2: Interpret the Question Precisely

What's being asked? The student's goal is to identify which of the three foods has the highest magnesium content.
What type of answer do we need? This means we need to find the choice that most effectively accomplishes this specific goal using the relevant information from the notes.
Any limiting keywords? None specified.

Step 3: Prethink the Answer

The right answer should clearly identify chia seeds as having the highest magnesium content (\(\mathrm{150\,mg/oz}\))
Make this comparison explicit by relating chia seeds to the other foods
Use the specific numerical data from the notes effectively
Directly accomplish the goal of identifying which food is highest

Answer Choices Explained

At \(80\, \mathrm{mg/oz}\), almonds contain more magnesium than peanuts (\(49\, \mathrm{mg/oz}\)).

✗ Incorrect

Only compares almonds to peanuts, completely ignoring chia seeds
Doesn't identify the food with the highest magnesium content

Chia seeds contain \(150\, \mathrm{mg/oz}\) of magnesium, which is more than peanuts and almonds.

✓ Correct

Clearly identifies chia seeds as having \(150\text{ mg/oz}\) of magnesium
Explicitly states this is more than peanuts and almonds
Uses the relevant numerical data effectively
Directly accomplishes the goal

Magnesium is present in many foods, including peanuts, almonds, and chia seeds.

✗ Incorrect

States general information about magnesium being present in all three foods but provides no quantitative comparison or identification of which is highest

Peanuts contain \(49\, \mathrm{mg/oz}\) of magnesium, a mineral the human body requires for over \(300\) essential processes.

✗ Incorrect

Focuses only on peanuts and connects them to magnesium's importance but provides no comparison to other foods and doesn't identify which food has the highest magnesium content

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