A **pedestrian** is a person who moves on foot through public roads, such as sidewalks and roads. Additionally, people are considered pedestrians if they:

- Push or pull a baby stroller, a wheelchair, or any small non-motorized vehicle.
- Walk while carrying a bicycle or a two-wheeled moped.
- Move in a wheelchair.

Therefore, the **correct answer** is that a pedestrian is someone who, without being a driver, travels on foot through public roads. The other options are not correct because:

- A person in charge of an animal is not considered a pedestrian.
- A person riding a bicycle is also not considered a pedestrian, as they are using a vehicle.