To support the argument that cell division promotes genetic continuity, the best response is:
A: mitosis and cytokinesis
This choice highlights the key phases in the cell cycle where the distribution of genetic material occurs. Mitosis is the process where the cell's duplicated chromosomes are separated and distributed into two daughter cells, ensuring that each new cell receives an identical set of genes. Cytokinesis follows mitosis, dividing the cytoplasm and completing the formation of two distinct cells, which further solidifies genetic continuity.