The correct option is C secondary meristem
Secondary meristems are tissues formed by the dedifferentiation of permanent tissues. Whereas primary meristem is derived from promeristem or the primordial meristem. Secondary meristem occur in the mature regions of the plant and they appear later than primary meristem.
Types of primary meristem include- apical, intercalary and lateral. Types of secondary meristems include- vascular cambium and cork cambium.