PrepTest 73, Logical Reasoning 2, Question 8
Summary
The content provides a detailed walkthrough of solving an inference question on the GRE, focusing on interpreting information correctly and eliminating incorrect answer choices based on the given data.
- Inference questions require understanding the given information and selecting an answer that can be proven true.
- The passage discussed involves analyzing how fluoride enters groundwater, emphasizing the role of sodium in increasing fluoride concentrations.
- Key to solving the question is distinguishing between what is directly stated and what is inferred, particularly concerning the sources of fluoride and sodium.
- Incorrect answer choices are eliminated through a process of logical deduction, highlighting the importance of closely reading both the passage and the answer choices.
- The correct answer (D) is identified by linking the increased fluoride concentrations with the presence of sodium, supported by the controlled variables in the study.
Chapters
00:00
Understanding Inference Questions
00:15
Analyzing the Passage
01:19
Eliminating Incorrect Answers
02:16
Identifying the Correct Answer
