Answer:
Hi there!
The answer to this question is: C. 13 hours
Explanation:
Based on the information given, on Fridays it is open from 8 am to 3 pm that is in total 7 hours. And on Saturday it is open from 10 am to 4 pm which is 6 hours in total. Next you add 6 to 7 to get 13, which means there are 13 more hours in the fall and spring semester.