Answer: The correct answer is -
D) They have the same number of chromosomes.
Gametes can be described as reproductive cells or sex cells that are haploid ( that is having half the number of chromosomes from their diploid parent cell).
They are produced through a process of cell division, which is known as meiosis (also called reductional cell division). During this process, a diploid parent cell undergoes two rounds of cell division (meiosis I and meosis II) to produce four haploid, daughter cells (called gametes, such as egg produced females).
The haploid gametes all have the same number of chromosomes, which is 23 chromosome in case of human beings.
Thus, option D) is the right answer.