Looking into your microscope, you spot an unusual cell. Instead of the typical rounded cell shape, the cell has a very narrow middle separating two bulging ends. It sort of looks like the number 8! You realize that this cell is

going through Cytokenesis.

Explanation:

This is the process which climax  cells division in plans and animals where the cells cytoplasm divides and two new daughter  cells are formed. it occurs both in plants and animals but in different forms.

The point of initiation of cytokinesis is determined  by the mitotic spindles and basically Cytokineses marked the beginning of   new generation of  cells.

it occurs in 4 stages which are initiation, contraction, stage of insertions of the membrane and completion of division. It is the contraction of the membrane and the eventual formation of the two daughter cells that resulted in  fig -8- shaped under microscope.

      n

the earth is thought to have been formed about 4.6 billion years ago by collisions from a cloud of hydrogen, helium, rock, ice and other materials. these were pulled together by gravity to form objects in and around earth like- asteroids and small early planets called planetesimals.

so, the best possible answer to this question will be option d- to harden materials to form different parts of earth’s layers