Let ,
K: Person is kind
C: Person is corrupt
E: Person is elect
Here both statements 1,2 are premises and we need to check what is the conclusion.
S1: C-->¬E
S2: K-->E
3. E-->¬C from S1, and Contrapositive rule.
4. K-->¬C from S2,3 and Hypothetical syllogism.It is valid.
K-->¬C ≡ " If a person is kind, he is not known to be corrupt ".
So, (c) is the Ans.