Final answer:
The full context of the question regarding what must be on the rear of every bus or truck made after 1959 is missing, making it difficult to provide a specific answer. However, vehicle regulations typically include various safety equipment and visibility requirements for buses and trucks.
Step-by-step explanation:
It seems that the original question pertaining to what every bus or truck made after 1959 must have on the rear is missing its complete context, as the options (a. True b. False) do not correspond to a specific requirement. For vehicles such as buses and trucks, regulations typically mandate the presence of items such as safety equipment, lighting, and reflective markers to ensure visibility for safety reasons. Specific requirements can change over time and can vary by location.
Regarding the additional excerpts provided for reference, they cover a variety of subjects such as physics, social studies, and government. Considering the information given, here are examples of answering such questions:
- The market revolution did bring many social and economic changes to the United States, thus the answer for that statement is True.
- When a bar magnet is dropped through a copper tube, it does induce an electric current in the tube, making the answer to that statement True.
- A vector can indeed form the shape of a right-angle triangle with its x and y components, so the answer is True.