The correct option is B Stem is weak and climbs over the support with the help of tendrils.
Dolichos is a genus of flowering plants in the legume family. These are herbs and shrubs growing upright, sometimes with climbing stems, or spreading prostrate upon the ground. They have woody rhizomes. The plant's general form, annual stems sprouting from a large perennial rootstock is thought to be adapted to habitat prone to seasonal wildfire.
Thus, the correct answer is option (B),