Step 1: Concept
Lipids are a diverse group of organic compounds including fats, oils, and phospholipids.
Step 2: Fact Verification
Simple lipids like triglycerides are made of glycerol and fatty acids (A). They are hydrophobic/insoluble, and phospholipids contain phosphorus (B). Oils have lower melting points than fats (D).
Step 3: Analysis of Glycerol
Glycerol (trihydroxypropane) is a simple 3-carbon alcohol, not a complex lipid itself; it serves as a backbone for lipid synthesis.
Step 4: Conclusion
Statement (C) is incorrect because glycerol is not a complex lipid.
Final Answer: (C)