Concept:Maternal uncle means mother's brother. So, M must be the brother of T's mother.
Explanation:• '+' means father, '-' means mother, '×' means brother, '÷' means sister.
• For M to be maternal uncle of T: M should be brother of T's mother.
• That means: M × (some female) and that female - T.
• Option B:
M×K−T means M is brother of K, and K is mother of T. So M is brother of T's mother → maternal uncle.
• Options A, C, D give aunt or paternal uncle, not maternal uncle.
Answer:Option B:
M×K−T