Which of the following best describes a selective advantage of retaining the gametophyte within the living sporophyte of land plants?

A) The gametophyte is able to grow much larger than if it was independent.
B) The gametophyte can be raised into the air, exposing it to more light for photosynthesis.
C) Meiosis can now occur in haploid gametophyte cells.
D) Nutrients needed for the gametophyte to produce gametes can be provided by the parent plant.