Correct Answer: Option C

Explanation

Meiosis ensures that the chromosome number remains constant from generation to generation in sexually reproducing organisms. During meiosis, the chromosome number of a cell is reduced to half, resulting in the formation of gametes (sperm and egg cells) with a haploid number of chromosomes. When these gametes fuse during fertilization, the original chromosome number is restored in the offspring. 

While both mitosis and meiosis contribute to maintaining a constant chromosome number across generations, they do so in different ways. Mitosis ensures that the number of chromosomes remains the same in somatic cells, while meiosis reduces the chromosome number by half in germ cells to prevent doubling of chromosomes during fertilization.  Meiosis ensures that the chromosome number remains constant by reducing it in gametes and then restoring it through fertilization, while mitosis maintains the same chromosome number within individual organisms. 

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