Explanation:

- Expression 1: D ^ B $ E

- D and B are a married couple.

- B is the father of E.

- Expression 2: B % K * L

- B is the son of K.

- K is the grandmother of L.

- Expression 3: E ^ G + L

- E and G are married.

- G is the sister-in-law of L.

- Expression 4: B % M

- B is the son of M (implies M is one generation above B).

- Expression 5: D ~ H ! B

- D is the daughter of H.

- H is the father-in-law of B.

- Analysis:

- B is the father of E.

- D is married to B and is H's daughter.

- Thus, H is E's maternal grandfather.

- Correct Answer: Option 2 - Grandfather