Final answer:
The gratuity percentage for deliveries over $100 (excluding taxes and fees) is 15%.
Step-by-step explanation:
The gratuity percentage for deliveries over $100 (excluding taxes and fees) is option A) 15%.
This means that if the total for a delivery is over $100, the customer is expected to tip 15% of the bill amount.
For example, if the bill is $120 (excluding taxes and fees), the tip amount would be $18 (15% of $120).
It is important to note that gratuity percentages may vary depending on the service or delivery industry, so it is always a good idea to verify with the specific establishment or platform for accurate tipping guidelines.