Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Input: Consider Input: Soft of these best describes the way a feather feels.

Output: Which of these BEST describes the way a feather feels?


Input: Consider Input: Learned behavior is adaptive because they are flexible, capable of changing if the environment changes.

Output: What kind of behaviors are adaptive because they are flexible, capable of changing if the environment changes?


Input: Consider Input: The light reactions take place in the thylakoid.


Output: The light reactions take place in which membranes?