Correct option is D
Given: A + B means ‘A is the daughter of B’
Sign | + | - | × | ÷ |
Relationship | Daughter | Wife | Father | Brother |
Expression: ‘A + E − F × N ÷ S’?
According to the given information, family tree diagram of expression will be:


As per the diagram, A is the sister of S.
Thus, the correct option is (D) Sister