Question

Keisha told her friend that she can get to the town library by walking one mile east, turning left, and then walking a half a mile north.
Which best describes how Keisha can improve these instructions to better help her friend find the library?

Answer 1

The best improvement to these instructions that Keisha can make
immediately and easily is to describe where the instructions start from. 

Does the route start from Keisha's house ?  From her friend's house ? 
From my house ? 

Knowledge of the coordinate reference frame makes a big difference,
and it's essential.

Answer 2

Answer;

providing a reference point to follow

Explanation;

A reference point is a starting point you choose to describe the location, or position, of an object.

A reference point is a place or object used for comparison to determine if something is in motion. An object is in motion if it changes position relative to a reference point. A reference point is some point in space used to describe the position of other things, relative to this reference point.