Correct option is A
Let's break down the movement of the person step by step:
Walks 5 miles to the west: The person starts facing west.
Makes a left turn: A left turn from west will make the person face south.
Walks 5 miles south: The person is now facing south.
Makes a left turn again: A left turn from south will make the person face east.
Walks 5 miles east: The person is now facing east.
Makes a left turn again: A left turn from east will make the person face north.
Walks 5 miles north: The person is now facing north.
So, after completing the walk, the person is facing north.