Correct option is C
Given - Mr. Q starts from Point Z and drives 7 km towards the north. He then takes a left turn, drives 9 km, turns right and drives 6 km.
He then takes a left turn and drives 7 km.
He takes a final left turn, drives 13 km and stops at Point A.

The required distance = AZ = 7 + 9 = 16 km
distance = A to Z = East direction