The cell type that is not likely to undergo mitosis is:
B. egg cell
Mitosis generally occurs in somatic (body) cells for growth and repair. Egg cells (oocytes) undergo meiosis to produce gametes for sexual reproduction, and they usually do not continue to divide through mitosis after their initial formation. In contrast, skin cells, stomach cells, and certain other body cells are capable of mitosis throughout the lifespan of an organism.