An embryo grows into a multicellular organism made of a wide variety of cell types. How does the variation in cell types occur?
A. Each type of specialized cell produces another type in an ordered sequence.
B. Muscle and connective tissue in the embryo produce the other types of specialized cells.
C. Embryonic stem cells divide to produce all types of specialized cells.
D. Embryonic stem cells divide to produce nerve cells, which produce all types of specialized cells.

The answer is C.

Explanation:

An embryo is the early stage of development of a multicellular organism. In general, in organisms that reproduce sexually, embryonic development is the part of the life cycle that begins just after fertilization and continues through the formation of body structures, such as tissues and organs and due to this, embryonic stem cells divide to produce all types of specialized cells just like it was stated in answer C.

Hope this helps :)

the backbone of the dna and rna compound is sugar phosphate.