The correct option is
B Bryophyta
The given plant is
Riccia which is an example of bryophytes in which the body is not differentiated into stem, roots, and leaves. They have a green thalloid shaped body to performs photosynthesis which is attached to the ground with the help of hair like structures called rhizoids. They reproduce by producing spores which germinate under favorable conditions.
Thus, the correct answer is option B.