Final answer:
Isoamyl acetate smells like ripe bananas, not vinegar, mint, or lemon. It's an ester compound known for its fruity aroma.
Step-by-step explanation:
The smell of isoamyl acetate is similar to that of ripe bananas. Esters like isoamyl acetate are responsible for the fruity aromas and flavors in many plants. When looking at the options provided: vinegar, banana, mint, and lemon, the correct answer is b) Banana. Isoamyl acetate is one of the compounds that gives bananas their characteristic aroma. In contrast, the smell of vinegar is due to acetic acid, mint has a refreshing menthol odor, and lemon scent is typically associated with citric or other similar essential oils, not esters.