PSAT Reading Question 519: Answer and Explanation

Question: 519

If the author wished to extend the x-axis of the figure to portray the point at which a wound would nearly certainly be healed without extending the graph unnecessarily, which of the following would serve as the most logical final value for days?

• A. 10
• B. 100
• C. 1,000
• D. 10,000

Correct Answer: C

Explanation:

(C) Line 37 states that the last step of healing, the maturation stage, may last up to two years. The inflammatory phase lasts between 2 and 14 days, and the proliferative phase lasts between 3 and 21 days. Therefore, the whole healing phase may last 14 + 21 + 365 + 365 = 765 days. Thus, the closest answer is 1,000. In 1,000 days, the wound will almost certainly be healed, choice (C).