Correct option is D
Given:
Satish starts from Point Y and drives 19 km towards west.
He then takes a right turn, drives 10 km.
He then turns right and drives 11 km.
He takes a final right turn, drives 10 km and stops at Point Z.
From the given information path diagram will be.

19 - 11 = 8km
He far 8km and towards East direction should he drive in order to reach Point Y again.
Thus, correct option is (d).