3. An organized group of related parts that interact to form a whole is a(n) A. theory
B. system
C. adaptation
D. arrangement

B. System

Explanation: A system is a group of organized things that interact to form a whole. The reason it's not A., C., Or D., is because its definitely not a theory, not a adaptation because that's evolution and natural selection, and not a arrangement because that's putting a group in order.

b

Explanation:

I did the question and got it right

answer: i say it foxes

explanation:

you need to give us the answer options to for me to offical decide.