Answer:
Option C. 312 minutes
Step-by-step explanation:
A participant took 5.2 hours to complete a marathon.
5.2 hours = 5 hours 12 minutes
In this question we have to convert hours and minutes into minutes.
1 hour = 60 minutes
5.2 hours = 60 × 5.2 = 312 minutes
Participant took 312 minutes to complete the marathon.