What is the signal that shows you are ready to begin the exercise during range exercises?

Answer: C — Left hand in the air

During range exercises in the MSF Rider's Course, raising the left hand in the air is the signal that shows you are ready to begin the exercise. This action ensures that all students and the instructors are on the same page and ready to proceed. It effectively communicates readiness without the need for verbal cues, allowing for a clear and consistent indicator for all participants.