The plant mentioned in the question is a fern. So its a Pteridophyte.
Option C
Step-by-step explanation:
The image shows a plant that produces spores by meiosis. These spores germinate to a heart shaped gametophyte generation which is haploid. This generation contains anthredium and archegonium which produces male gametes and female gametes respectively. These gametes undergo Fertilization and forms a zygote which gives rise to the main plant body which is diploid.
So the main plant body is sporophyte and the gametophyte is heart shaped. Thus this plant is a fern. Thus the class is Pteridophyte. Here the plant produce the spores on the back side of their leaves which are called sporophylls and the spores fall on ground to produce a gametophyte again.