Which of the following is a rule for pedestrians to follow?

• They must not walk on the roadway if a sidewalk is available.
• They must cross the road at intersections or at designated crosswalks.
• They must yield the right-of-way to vehicles if crossing a roadway at any point other than within a crosswalk.
• All of the above/
  Explanation:

  "Rules for Pedestrians: 1. Pedestrians must not walk on the roadway if a sidewalk is available. 2. Cross the road at intersections or designated crosswalks. Crosswalks at intersections may be marked or unmarked. 3. Pedestrians must yield the right-of-way to vehicles if crossing a roadway at any point other than within a crosswalk."