Which statement about multicellular organisms is correct? A. Every cell of a multicellular organism is responsible for movement.
Every cell of a multicellular organism is responsible for movement.

B. A multicellular organism has many specialized cells.
A multicellular organism has many specialized cells.

C. Cells in multicellular organisms can reproduce by binary fission.
Cells in multicellular organisms can reproduce by binary fission.

D. The cells of a multicellular organism must perform all life functions.

B & C are both correct

Explaination:

A. we, as multicellular organisms, have many different types of cells but only brain cells and muscle cells are responsible for movement of the body.

B. take people, for example, we have certain cells with different jobs. blood cells and skin cells don't have the same job, skin cells protect our bodies from outside germs and blood cells carry oxygen around the body.

C. cells reproduce by binary fission, that how you are able to heal after you scape your knee or get a paper cut

D. And because the blood carries oxygen other specialized cells don't have to worry about getting oxygen and can work on their own job

i did my best - hope this helps :)