The correct option is B She is a student
One couple is BA. Now, C and F are the children of E. So, the other couple is ED. E is a teacher, D is a female doctor and B is a lawyer.
Clearly, A is a housewife and hence a female.
D is the mother of C and F.
A has one son and one grandson.
Clearly, E is the son of A and C or F being one of the grandson.
The grandson is a male engineer and the granddaughter is a student.
Hence, option (B) is the correct answer.