The correct option is D I & IV
Mosses are monoecious bryophytes, the male antheridia and female archegonia are produced on the apex of the leafy shoots of the same plant body, not on different thalli. After fertilisation, the zygote develops into a sporophyte, consisting of a foot, seta and capsule. The capsule contains spores that are formed after meiosis. The predominant stage of the life cycle of a moss is the gametophyte which consists of two stages - protonema stage and leafy stage.