Correct Answer - Option 4 : 3.20 P.m.
In the given question,
Flight leaves every 5 hours, but the flight left 25 mins before.
Therefore the next flight is in = 5:00 - 00:25
= 4:60 - 00:25 ( 1 hour = 60 min )
=4:35
Therefore the next flight will leave in 4 hours and 35 mins.
Now, Exact time = 10:45 + 4:35
= 14:80
= 15:20 ( Since 60 mins = 1 hour )
Now 15:20 could also be written as 3:20 PM.
Therefore, Option 4 is the correct answer.