Triglycerides' polarity and solubility

Steps:

• Triglycerides consist of glycerol esterified with three fatty acids, featuring long non-polar hydrocarbon chains.
• These chains dominate, making the molecule overall non-polar.
• Non-polar molecules dissolve in non-polar solvents like ethanol but not in polar water.
• Compare to options: only A matches non-polarity and ethanol solubility.

Why A is correct:

• Triglycerides are non-polar esters with hydrophobic fatty acid chains, soluble in organic solvents like ethanol per "like dissolves like" principle.

Why the others are wrong:

• B: Non-polar but insoluble in polar water.
• C: Molecules are non-polar, not polar.
• D: Molecules are non-polar and insoluble in water.

Final answer: A