In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.

Example Input: Question: Mike needed to get a dark picture . In order to get the darkest photo, Mike made the exposure 
 Answer: shorter
Example Output: The longer the exposure, the more light that the telescope can gather to make the image.

Example Input: Question: Willard dug up a rock from near the surface, and realized it was _____. 
 Answer: young
Example Output: Therefore, deeper rock layers must be older than layers closer to the surface.

Example Input: Question: Asa is running in a race and his body temperature increases. His skin's blood vessels _____ in diameter. 
 Answer: increase
Example Output:
When your brain senses that your body temperature is increasing, it sends messages to the blood vessels in the skin to increase in diameter.