Final answer:
The motorcycle safety question seems to be mismatched with answer options relating to physics and motion rather than motorcycle collision causes. If the question were consistent with the options, the answer involving both actions changing motion would be correct.
Step-by-step explanation:
The subject of the question appears to be related to motorcycle safety in Health education. The specific focus is on the common contributing factors to motorcycle collisions. According to the context provided, the most collisions involve riders who:
- a) Overbrake the rear tire
- b) Underbrake the rear tire
- c) Were experienced riders
- d) None of these
However, the question seems mismatched with the available answer options, which mention a person standing up from a seated position and a car accelerating while driving.
Those options don't correspond to the motorcycle safety question, but if we were to answer the mismatched question, the answer would be (c) both of the above, as both actions involve a change in motion or force acting on the body/car.