The correct option is B Haplontic
In haplontic life cycle, the dominant phase is the gametophyte which is a free-living phase that forms the male and female gametes. The fusion of male and female gamete forms the zygote that represents the diploid stage in the life cycle.. Haploid spores are formed by the meiotic division of zygote that gives rise to the gametophyte on germination. Such a life cycle is seen in Spirogyra. Thus the correct answer is option A.