The correct option is C.
Pilli is a long protein filament which attach reproducing cells together during conjugation. This attachment allows the cells to exchange the genetic materials, that is, plasmid between them.
Convergent evolution in my understanding is the independent evolution of similar features in species of different lineages.
What type of fungi is most closely related to club fungi?
✅
Club fungi is most closely related to sac fungi.

I believe the correct answer is B. Detrital