Haploid-Diploid mechanism of sex determination involves:
Development through Parthenogenesis
Gamete formation through mitosis in males
Gamete formation through meiosis in females
All of these
As we have studied in:
Haploid-diploid mechanism of sex determination -
In the haploid-diploid mechanism of sex determination, males develop through parthenogenesis from the haploid egg, so they produce gametes through mitosis. Females are diploid, so they undergo meiosis to produce gametes.
Hence, the correct answer is option d.