The correct answer is:
A. Ferns use sexual and asexual reproduction.
Ferns have complex life cycles that include both asexual reproduction through spores and sexual reproduction through gametes. They produce spores via meiosis, which grow into a haploid gametophyte generation, while the diploid sporophyte generation produces spores. This is different from human reproduction, which is primarily sexual and does not involve a haploid generation in the same way.