Pls answer quick I don't understand Match the missing word with the sentence where it belongs.
1.The hard, outside part of a bone is called tissue.

2.Red blood corpuscles are formed in the marrow of bones.

3.The bones are operated by to produce body movements

4.The inner cavities of bones are filled with

5.The spongy, inner tissue of a bone is called tissue.

a. bone marrow
b. compact or dense
c. cancellous
d. bone
e. muscle