Question

what is the main function of ribosomes in an animal cell?
to make proteins

to break down sugar and release energy that the cell can use

to control which substances enter and leave the cell

to break down waste and worn - out cell parts

Explanation:

Ribosomes are cellular structures responsible for protein synthesis. The option "to make proteins" aligns with this function. Other options: controlling substances (cell membrane), breaking down sugar (mitochondria), breaking down waste (lysosomes) are incorrect.

Answer:

to make proteins