The correct option is A Transformation of root cells into root cap
The transformation of the root cells into the root cap involves the process of differentiation. Differentiation is the process by which a cell gets matured to perform a specific function. In this process, cells undergo structural changes in the cell walls and the protoplasm.
Senescence is the process in which cells lose their metabolic activity and fall off the plant.
The formation of new cells near the wounded area requires cell division, not cell differentiation.
In the formation of tumours in plants and animals, massive cell division takes place.