Final answer:
For a 30 minute appointment, 3 time slots are needed with 10 minute intervals, and 2 time slots with 15 minute intervals; the answer is A. 3, 2.
Step-by-step explanation:
If the appointment schedule is set up with 10 minute slots, a patient scheduled for a 30 minute appointment would use 3 time slots (because 30 divided by 10 equals 3). If the appointment schedule is set up with 15 minute time slots, the same patient would use 2 time slots (because 30 divided by 15 equals 2).
The correct answer to the question would be A. 3, 2.