Select the correct option of the given sentence.
Smt. Savithri is wisest than all others in the group.

Correct option is C

The correct option is (c) Smt. Savithri is wiser than all others in the group.
Explanation: When comparing one with a group (not all in existence), we use the comparative degree (wiser), not the superlative (wisest).
Grammatical rule used: Use comparative degree with “than.”
Example: She is taller than her brother.