The correct option is A can be prostrate or erect
Plants in division bryophyta grow in moist conditions. Their plant body is also undifferentiated and hence called thallus. It can be either erect (Funaria) or prostrate (Marchantia).
The erect plant body is differentiated into root-like structures called rhizoids, axis and leaf-like structures. The rhizoids provide anchorage to the plant body.