<span>The answer is B. Response
If the </span><span>environment changes what should an organism do? Respond! =)
Have a good day!</span>
C) medication
Explanation:
The context suggests a noun that means "medicine", i.e. a pill or a liquid used in treating illness. The correct choice would be C. medication because that's what the term 'medication' means: drugs used to treat an illness.
Hope this helps.
A says big and cruel
B says different
C says small and nice
D says normal