In horticulture, the most common practice of growing plants is
grafting
The correct option is C.
Explanation of the correct option-
Explanations of the incorrect option-
Option A:
Option B:
Option D:
Tissue culture is incorrect because it requires sterile environments and proper growth media to support growth. Lack of any of the necessities would hinder the formation of new plants.
The most common practice of growing plants in horticulture is grafting.