When the circular muscles contract, the earthworm stretches, becoming longer and thinner. The earthworm uses its setae to anchor the front of its body in the soil. Now the longitudinal muscles contract and the earthworm becomes shorter and wider or it bends from one side to the other, pulling the body forward.
I think it’s (d) I’m really sorry if I’m wrong
"Cytoskeleton" is the component among the components <span>of a cell functions like the bones and muscles in the human body. he correct option among all the options that are given in the question is the third option or option "C". I hope that the answer has come to your help.</span>
Answer:independent variable
Explanation:
