Question

when an animal cell goes through cytokinesis,__________
a cell plate forms dividing the 2 new nuclei. the cell membrane pinches off the 2 new cells. 4 new cells are formed. none of the above

Explanation:

In animal - cell cytokinesis, a cleavage furrow forms due to the contraction of a ring of actin and myosin filaments. This causes the cell membrane to pinch off, separating the two new cells. A cell plate forms in plant - cell cytokinesis, not animal - cell cytokinesis, and cytokinesis results in 2 new cells, not 4.

Answer:

B. the cell membrane pinches off the 2 new cells.