When a human egg is fertilized by a sperm, the resulting zygote begins the process of cell division that eventually results in an organism with trillions of cells. The image shows a mass of human cells at the eight-cell stage, shortly after fertilization. What is the best description of these cells?

adult stem cells
adult stem cells

embryonic stem cells
embryonic stem cells

marrow cells
marrow cells

hope this helps not sure tho

Explanation:

Fertilization is the union of a male and a female gamete that gives rise to a zygote that is the first cell of the organism. Fertilization occurs in the sexually reproducing organisms. After fertilization , the zygote undergoes continuous division and Gives rise to a mass of cell that later on differentiate into cells that assume specialized function, each group of specialized cell then gives rise to organ system of the organism.

not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.