air pressure bright light wind fog
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Sandra puts some pill bugs into an open box. She covers half the box with a piece of cardboard. She then places the box outside on a summer day, and all the pill bugs move under the cardboard. The pill bugs are most likely responding to which of the following?
Possibilities:
- air pressure
- bright light
- wind
- fog

bright light