Concept:Mitosis produces genetically identical cells, so it cannot create genetic variation.
Explanation:Variation in living organisms can be caused by environmental factors, inheritance, and meiosis.
Meiosis creates variation through crossing over and independent assortment.
Inheritance passes different combinations of genes from parents to offspring.
Environment can influence traits and produce variation.
Mitosis, however, produces cells that are exact copies of the parent cell.
Therefore, mitosis does not act as a source of variation.
Answer:C. Mitosis