Considering the structures of fatty acids, explain why sunflower oil, a polyunsaturated oil, has a lower melting point than peanut oil, a monounsaturated oil.

• A. Sunflower oil's polyunsaturated fatty acids pack more tightly than peanut oil's monounsaturated fatty acids.
• B. Sunflower oil's polyunsaturated fatty acids pack less tightly than peanut oil's monounsaturated fatty acids.
• C. Sunflower oil has only one double bond in its hydrocarbon chain, whereas peanut oil has multiple double bonds.
• D. Sunflower oil does not have a double bond in its hydrocarbon chain, whereas peanut oil has multiple double bonds.

Answer: (B)