How did the evolution of seed plants change the different forms in the life cycle of plants?

dominant sporophyte generation and microscopic
gametophyte within sporophyte dominant gametophyte generation and microscopic
sporophyte within gametophyte dominant sporophyte generation with large, separate gametophyte bodies
dominant gametophyte generation with large, separate sporophyte bodies

Dominant sporophyte generation and microscopic  gametophyte within sporophyte.

Explanation:

The sporophyte is the dominant generation, but multicellular male and female gametophytes which are microscopic in nature with the female gametophyte made up of few cells being buried in the tissues of the sporophyte and the male gametophyte, the pollen grain, being carried from plant to plant by wind, water, or animals. these are all produced within the flowers of the sporophyte.

b ti isnfornopgnoernfrof

that is wrong, its not thymus.