The dominant part of the angiosperm life cycle is the ____.

A) diploid gametophyte
B) diploid sporophyte
C) haploid gametophyte
D) haploid sporophyte
E) fertilization step

The angiosperm life cycle is dominated by its diploid sporophyte stage, which produces spores that develop into the reproductive haploid gametophyte stage. Fertilization occurs between the haploid gametes produced by the gametophyte stage, leading to the formation of a diploid zygote that develops into a new sporophyte. Therefore, options A, C, and D are not correct, and option E is only a step in the process, not the dominant part of the life cycle.