Final answer:
Cointreau and Midori are different in flavor; Cointreau has a bitter-sweet orange taste while Midori is noted for its sweet melon flavor.
Step-by-step explanation:
Cointreau and Midori have different flavor profiles. Cointreau is a French liqueur known for its bitter-sweet orange flavor, commonly used in cocktails like the Margarita or the Cosmopolitan. It is clear in color and has a strong citrus scent. On the other hand, Midori is a sweet Japanese liqueur with a bright green color, famous for its distinctive melon flavor. It is often used to add a sweet and fruity touch to drinks. Neither of them are non-alcoholic; both contain alcohol. Therefore, the correct answer to the question is b) Different flavor profiles.