In a certain code language,
A + B means ‘A is the son of B’
A – B means ‘A is the sister of B’
A x B means ‘A is the wife of B’
A ÷ B means ‘A is the father of B’
Based on the above, how is C related to G if ‘C x S + D ÷ F – G’?

The correct option is Brother's wife.

To determine how C is related to G, we decode the given relation expression ‘C x S + D ÷ F – G’ step-by-step from left to right based on the provided coded definitions:

1. C x S: Since 'A x B' means 'A is the wife of B', C is the wife of S. This means C is female, S is male, and they are married.
2. S + D: Since 'A + B' means 'A is the son of B', S is the son of D.
3. D ÷ F: Since 'A ÷ B' means 'A is the father of B', D is the father of F. Since S is also D's son, S and F are siblings (they share D as their father).
4. F – G: Since 'A – B' means 'A is the sister of B', F is the sister of G.

Now, let's trace the sibling relations:
S, F, and G are all siblings (they share D as their father). Specifically, S is the brother of F and G.
Since C is married to S (C is S's wife), and S is G's brother, then C is the wife of G's brother.

Therefore, C is G's Brother's wife.