You are riding a bicycle and you need to stop. Your actions:

1. 1You will extend your right arm to the side and bend it at a right angle upward.
2. 2You will extend your left arm to the side or your right arm to the side and bend it at the elbow at a right angle upward.
3. 3You raise your left or right arm upward.
4. 4Options 1 and 2 are correct.