Occurrence: Spermatogenesis occurs inside the seminiferous tubules of a testis whereas oogenesis occurs inside the ovary. The product form in spermatogenesis is sperm which is flagellated i.e. motile and the product form in an Oogonium is ovum which is non-motile.
Answer: I believe the answer is B - Nucled Acids.
Hope this helps.
The answer is the first one ( it has more protons than electrons)