Answer:
c. cancer
Explanation:
Any conditions present in the natural surroundings, that exert adverse impact of mental wellness of the individuals are referred to as environmental stressors. Among the given options, heavy traffic, flashing light and loud noises are the stressors present in surroundings. Cancer is a disease that affect the physical well being of the person; it is not present in surroundings.
The cell contains many nuclei containing DNA, so DNA synthesis and mitosis are taking place, but the cell is not undergoing cytokinesis.