Final answer:
The speed limit on an expressway in most states is 65 mph.
Step-by-step explanation:
The speed limit on an expressway in most states is 65 mph (Option B).
However, it's important to note that speed limits can vary by state and can be subject to change. Some states may have different speed limits depending on the type of road or specific circumstances. It's always a good idea to check the local laws and any posted signs for the specific speed limit on a particular expressway.