The correct option is E T+M×S−K
Here, you have to check each and every option to get the desired answer.
The correct combination which represents S is niece of T is 'T + M S K'.
Check:
We have,T + M S K
S - K means S is the sister of K,
M S means M is the father of S and
T + M means T is the brother of M.
Clearly, M is the father of both K and S.
Now, T is brother of M, so T is uncle of S or S is niece of T.
Hence, option (B) is the correct answer.