While researching a topic, a student has taken the following notes: Georeferencing is the process of assigning geographic coordinates to...
GMAT Expression of Ideas : (Expression) Questions
While researching a topic, a student has taken the following notes:
- Georeferencing is the process of assigning geographic coordinates to an image.
- This process enables mapping software to place the image in its real-world location.
- A 2017 project by Tania López Marrero and colleagues georeferenced a set of aerial photographs of Puerto Rico's coastline taken in 1930.
- These photographs are the earliest known aerial photographs of Puerto Rico.
- López Marrero's project provided data that can help researchers analyze changes in Puerto Rico's coastline.
The student wants to define the term 'georeferencing.' Which choice most effectively uses relevant information from the notes to accomplish this goal?
A 2017 project by Tania López Marrero and colleagues assigned geographic coordinates to photographs of Puerto Rico's coastline and also used georeferencing.
Tania López Marrero and colleagues used georeferencing in their analysis of the earliest known aerial photographs of Puerto Rico.
Georeferenced aerial photographs from 1930 can help researchers analyze changes in Puerto Rico's coastline.
Georeferencing is the process of assigning geographic coordinates to an image so that mapping software can place it in its real-world location.
Step 1: Decode and Map the Passage
Passage Analysis Table
| Text from Passage | Analysis |
|---|---|
| "Georeferencing is the process of assigning geographic coordinates to an image." |
|
| "This process enables mapping software to place the image in its real-world location." |
|
| "A 2017 project by Tania López Marrero and colleagues georeferenced a set of aerial photographs of Puerto Rico's coastline taken in 1930." |
|
Passage Architecture & Core Elements
Main Point: The notes explain what georeferencing is and provide an example of how it was used to analyze historical changes in Puerto Rico's coastline.
Step 2: Interpret the Question Precisely
What's being asked? The student wants to define the term 'georeferencing' - so we need a choice that actually explains what georeferencing is.
What type of answer do we need? A definition that uses relevant information from the notes.
Any limiting keywords? N/A
Step 3: Prethink the Answer
- The right answer should actually define what georeferencing is, not just give examples
- The right answer should use the definition from the notes: assigning geographic coordinates to an image
- The right answer should explain the purpose: so mapping software can place the image in its real-world location
A 2017 project by Tania López Marrero and colleagues assigned geographic coordinates to photographs of Puerto Rico's coastline and also used georeferencing.
✗ Incorrect
- Describes what López Marrero's project did but doesn't actually define georeferencing
Tania López Marrero and colleagues used georeferencing in their analysis of the earliest known aerial photographs of Puerto Rico.
✗ Incorrect
- Again focuses on the López Marrero example rather than defining the term
Georeferenced aerial photographs from 1930 can help researchers analyze changes in Puerto Rico's coastline.
✗ Incorrect
- Talks about results of georeferenced photographs but doesn't define georeferencing itself
Georeferencing is the process of assigning geographic coordinates to an image so that mapping software can place it in its real-world location.
✓ Correct
- Provides the exact definition from the notes: "the process of assigning geographic coordinates to an image" and includes the purpose