The correct option is B Vegetative reproduction
Adiantum caudatum or the maidenhair fern is also known as the "walking fern". This is because its new plantlets grow wherever the arching leaves of the parent plant touch the ground, creating a walking effect. Shaded areas are its habitat. This is an ornamental fern found in south-east countries such as Bangladesh, Burma, India, Nepal, the Philippines, Thailand, and China.