PSAT Reading Question 210: Answer and Explanation

Question: 210

Using both the diagram and the text, what is an axon?

• A. A glial cell that provides support and nutrition
• B. The part of a neuron affected by multiple sclerosis
• C. Where charged particles generate
• D. Extensions that carry messages to the brain

Correct Answer: D

Explanation:

D. Looking at the diagram, the extensions at the end of the neuron are labeled as an axon. The text defines an axon in the fourth section. See Lesson: Evaluating and Integrating Data.