What is your final position in relation to your starting point if you have walked 10 km South, then turned 90 degrees to the left and walked another 6 km ?

Given: 

Walked 10 km South from starting point

Then turned 90 degrees to the left

Then walked another 6 km 

So, the final position in relation to the starting point can be determined by Pythagoras theorem :

Distance between Starting point (A) and Endpoint (C) ⇒ (AB)2 + (BC)2 = (AC)2

⇒ (10)2 + (6)2 = (AC)2

Distance between Starting point (A) and Endpoint (C) = 11.6 Km

Hence, the correct answer is "Option - (2)".