It's got to be C because none of the others relate to collaboration, but I'd say if you were unsure about this answer then the only other sensible one could be B, but I'd go with C.
From 8:30 am to 10:22 am it is 1 hour and 58 minutes, if it is 8:30 am to 10:22 pm, it would be 13 hours and 58 minutes. Hope I helped!
U can do like a outdoor social distance activity
