Final answer:
Triglycerides are hydrophobic molecules due to the presence of long hydrocarbon chains.
Step-by-step explanation:
Triglycerides are lipid molecules consisting of a glycerol backbone and three fatty acid chains. Due to the presence of long hydrocarbon chains, triglycerides are nonpolar and hydrophobic, meaning they are not attracted to water molecules. Therefore, the correct explanation for triglycerides is that they are hydrophobic (c).