What is a system?

A. A group of related predictions about the future of one branch of science
B. A series of actions or changes that brings about a desired result
C. A group of related parts that work together to achieve a desired result
D. A question to be considered, solved, or answered

c. is correct

Explanation:

According to me .

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above