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Let us verify the options.
Option (A):
p ÷ q, means p is mother of q.
q x r, means q is daughter of r.
The above two statements together tells us that, p is the wife of r. Hence wife and husband relationship exits between p and r.
Therefore option (A) is the answer.
Option (B):
p - q, means p is the brother of q.
q x r, means q is daughter of r.
The above two statements together doesn't tell us that p and r are related as wife and husband.
Hence, Option (B) is not the answer.
Option (C):
p + q, means p is the sister of q.
q x r, means q is daughter of r.
The above two statements together doesn't tell us that p and r are related as wife and husband.
Hence, Option (C) is not the answer.
Option (D):
p + q, means p is the sister of q.
q - r, means q is the brother of r.
The above two statements together doesn't tell us that p and r are related as wife and husband.
Hence, Option (D) is not the answer