1.  Questions : How is T related to K ?
Statements :

I.  R's sister J has married T's brother L, who is the only son of his parents.
II. K is the only daughter of L and J.

A. I alone is sufficient while II alone is not sufficient.
B. II alone is sufficient while I alone is not sufficient.
C. Either I or II is sufficient.
D. Neither I nor II is sufficient.
E. Both I and II are Sufficient.

Answer: Option E

Explanation:

From I, we know that L is T's brother and J's husband . since L is the only son of his parents, T is L's sister.

From II, we know that K is L's daughter.

Thus, from I and II, we conclude that T is the sister of K's father i. e. T is K's aunt.