Explanation:

Walking on the left side of the road is the correct option because of the following reasons:

1. Traffic Flow:
- In most countries, including India and the United Kingdom, people drive on the left side of the road.
- Walking on the left side of the road allows pedestrians to face oncoming traffic while walking, which enhances safety.
- It enables pedestrians to see vehicles approaching them, giving them enough time to react and move out of the way if necessary.

2. Safety:
- Walking on the left side of the road reduces the risk of accidents because pedestrians can anticipate the movement of vehicles and adjust their position accordingly.
- It also allows drivers to have a clear view of pedestrians walking on the roadside, reducing the chances of collisions.

3. Consistency:
- Consistency is important for maintaining order on the roads.
- If pedestrians walk on the same side as the traffic flow, it makes it easier for drivers to anticipate and react to their movements.
- Walking on the left side of the road ensures uniformity and reduces confusion for both pedestrians and drivers.

4. Road Rules:
- Many countries have specific road rules and regulations that require pedestrians to walk on the left side of the road.
- Following these rules promotes road safety and helps maintain order on the streets.

Therefore, it is important to remember that pedestrians should walk on the left side of the road to ensure their safety and maintain consistency with traffic flow.