In which of the following plants is the main plant body a gametophyte?

Bryophytes prefer to grow in moist places because-

Which of the following is a bryophyte?

Bryophytes are ...... .

Protonema is found in the life cycle of

Given below are two statements: One labelled as Assertion $A$ and the other labelled as Reason $R$:
Assertion $A$: The first stage of gametophyte in the life cycle of moss is protonema stage.
Reason $R$: Protonema develops directly from spores produced in capsule.
In the light of the above statements,choose the most appropriate answer from options given below: