Question

what is the main function of cytoplasm in an animal cell?
to fill the space between the cell membrane and the nucleus
to sort and package proteins and other substances
to make proteins
to direct cell activities by sending instructions to different parts of the cell

Explanation:

The cytoplasm in an animal cell functions as the space between the cell membrane and the nucleus, and it also holds the cell's organelles and is the site of many cellular activities. Among the options, "to fill the space between the cell membrane and the nucleus" describes one of its main structural and functional roles (it's the jelly - like substance that occupies this region and supports organelles). The other options: "to make proteins" is for ribosomes, "to sort and package proteins..." is for the Golgi apparatus, and "to direct cell activities..." is for the nucleus.

Answer:

to fill the space between the cell membrane and the nucleus