Question

which cells are haploid?
gametes
sperm
egg
zygote
sperm, eggs, and zygotes

Explanation:

Gametes are reproductive cells. Sperm (male gamete) and egg (female gamete) are haploid. A zygote is formed by the fusion of sperm and egg and is diploid. So gametes (which include sperm and egg) are haploid.

Answer:

gametes, sperm, egg