Which of the plants is hydrophyte?

Answer: Option A

Hydrilla of the plants is hydrophyte.
Hydrilla (water thyme) is a genus of aquatic plants. It is monoecious, with male and female flowers produced separately on a single plant; the flowers are small, with three sepals and three petals, the petals 3 - 5 mm long, transparent with red streaks.
Hydrilla is known to have many digestive and health benefits. The plant contains vitamins, minerals and antioxidants, as well as being useful for fighting indigestion.