Which of these best describes how an insect's exoskeleton is similar to a human skeleton?

Question

Which of these best describes how an insect's exoskeleton is similar to a human skeleton?

1. It is attached to groups of muscles

2. It is composed of the same materials

3. It is capable of producing red blood cells.

4. It is periodically replaced by a new skeleton

Answer 1

number 1 -- one is inside and the other is outside!!!