Answer:
A - damage molecules in skin cells, such as DNA.
Explanation:
Ultraviolet rays, when they influence the skin for a long time, cause damage to the skin's molecules by affecting its DNA. We know that when cells get damaged they are dying and replaced by new cells. If the DNA is damaged the cells must be destroyed by a process called apoptosis, to prevent the cell from further replicating and passing this defective information to the following cells.
In this way the alterations made to the DNA chains can damage the process of apoptosis, so that the origin of cells with defects, will be the origin of the cancer.