Answer: B) to cleanse sticky fingers
Explanation:
"Finger bowls" are small bowls of water used to clean people's fingers during a meal. These bowls were typically used with meals that require eating with fingers, often before the dessert. In this particular case from Book of Etiquette by Lillian Watson, the food eaten is the fruit, which normally makes our fingers sticky. Finger bowls are, thus, used after the consumption of fruit in order to clean fingers.