Answer:
Option B. is the right choice.
Step-by-step explanation:
Divide the given figure such that the divided parts represent either a rectangle or square.
Take one small box in each divided figure as one unit length.

B.
Because the input is time.
That narrows it down to B & C.
The time is in seconds. B.
The key idea here is that
speed of plane in wind = (speed of plane in air) + (speed of wind)
Let
be the speed of the plane in still air, and
the wind speed. A tailwind blows in the same direction as the plane, so for the first leg of the trip, we have

For the return trip, the wind would blow in the opposite direction:

Solve this system and you'll find
and
.