Question

your answer is required.
single choice
while driving, you see the pavement marked rxr in your lane, this marking means
you are driving on a rural route for mail delivery, and must watch for stopped mail delivery vehicles on the roadway
you are approaching a railroad crossing. slow down, look and listen for a train and be prepared to stop
you are driving on a restricted access road where vehicles transporting hazardous materials are not permitted

Explanation:

The "RXR" marking is a standard symbol for railroad crossings. It is used to alert drivers to the presence of a railroad crossing ahead. When drivers see this marking, they should slow down, look and listen for an approaching train, and be prepared to stop if necessary. This is a common traffic - related symbol knowledge.

Answer:

You are approaching a railroad crossing. Slow down, look and listen for a train and be prepared to stop