Answer:
The correct answer is option D, that is, gravitropism.
Step-by-step explanation:
The procedure of the growth of the plants in response to the pull of the gravity is known as gravitropism. There are two kinds of gravitropism witnessed in the plants, these are negative gravitropism and positive gravitropism. In positive gravitropism, the roots of the plants grow downward, that is, in the direction of gravity. While in negative gravitropism, the shoot of the plant grows in an upward direction, that is, away from the gravity. Thus, in the given case, one can witness the negative form of gravitropism.