Explanation:

Let’s break down the statements step by step:

- The bus starts from Swati’s house (Direction unknown yet).

- It takes one left turn to reach the hospital.

- Then, it takes a right turn and covers 5 km.

- Finally, it takes a left turn to reach the school.

- Upon reaching school, the bus faces southwest.

Let’s work backwards:

- At the school, the bus points southwest.

- The last turn before school was a left. So, before this turn, bus was facing west (left from west is southwest).

- Before that, a right turn led to west, so earlier it was facing north (right from north is west).

- Before that, a left led to north, so it was facing east at the very start.

Now, let’s check the options:

- 1. East (Correct)

- 2. North-west

- 3. South-east

- 4. North-east

Answer: Option 1: East