Correct option (b) apposition
Explanation:
Apposition or accretion is defined as the addition of new cell wall particles amongst the existing one, such as deposition of secondary walls in layers from outside over over the existing primary wall.
Intussusception can be demonstrated as the internal growth of the primary wall which occurs during the growth period of the cell resulting in the increase in volume of cell wall.
Deposition Molecules settling out of a solution.
Aggregation Direct mutual attraction between particles or aggregation of soil granules to form soil structure.
