Explanation:

- Shalu starts by walking 30 meters north.

- She turns right and walks 30 meters east.

- She turns right again and walks 55 meters south.

- She then turns left and walks 20 meters east.

- Lastly, she turns left and walks 25 meters north.

Analyzing her path:

- Initially 30 meters north, then 55 meters south results in a net 25 meters south.

- She walks a total of 50 meters east (30 + 20 meters) from her original position.

Therefore:

- Shalu is 50 meters away from her original position.

- She is 25 meters south from the starting point.

- Correct Answer: Option 4, 50 m, South