The correct option is C Salvinia
A heterosporous plant produces two different kinds of spores, macro (large) and micro (small) spores, which are female and male spores respectively. Most of the pteridophytes are homosporous and produce only one kind of spore. But very few pteridophytes like Selaginella and Salvinia are heterosporous. Pteris, Adiantum and Dryopteris are homosporous.