The repair by cell division in the damaged tissue is

The correct option is epimorphosis regeneration.

To understand why this is the correct answer, let us look at the key mechanisms of tissue repair and regeneration in living organisms:
Regeneration typically occurs through two primary pathways: epimorphosis and morphallaxis.

1. Epimorphosis Regeneration:
Epimorphosis is a type of regeneration that involves the formation of a specialized structure called a blastema. When tissue is damaged or an organ/limb is lost, the cells near the injury site undergo dedifferentiation, reverting back to a simpler, stem-cell-like state. These cells then undergo rapid, active cell division (proliferation) to generate a mass of undifferentiated cells, which subsequently differentiate into the specific cell types needed to reconstruct the missing or damaged parts. Because this mode of repair relies directly on new cell division to replace lost tissue, it is classified as epimorphosis.

2. Morphallaxis Regeneration:
In contrast, morphallaxis involves the remodeling or reorganization of existing tissues to restore a lost structure without significant cell division. The remaining cells simply rearrange themselves to form the missing parts (often resulting in a smaller version of the organism, as seen in Hydra).

Therefore, because the repair described in the question is driven by cell division in the damaged tissue, it is classified as epimorphosis regeneration.