The morula starts as a solid ball of totipotent cells that are formed from a single cell after an egg becomes fertilized. Which statement BEST describes how the morula is formed?

A
Cells divide through the process of mitosis.

B
Cells divide through the process of differentiation.

C
Cells become specialized through the process of mitosis.

D
Cells become specialized through the process of differentiation.

A solid ball of mass of totipotent cells always begins the process of embryo development in humans. This solid mass is not specialized yet and can develop into a whole organism.

A morula is formed when cells become specialized through the process of differentiation.

Cell differentiation is the process whereby a cell changes/evolves from one cell type to another.
Most of the time, the cell changes and become a lot more specialized as it goes through the various stages to become a lot more specialized.
Differentiation occurs various times during the development of a multicellular organism as it changes from a simple zygote that is totipotent to the blastocyst stage with pluripotent cells.
Then on to the morula stage then becoming a complex system of tissues and cell types that is a lot specialized with their specific functions.

Learn more about differentiation: https://brainly.com/question/954654