Question

which type of route marker sign is used to indicate you are approaching an intersection of traffic routes? a keystone marker b supplemental arrow c junction plate d direction plate

Explanation:

Junction plates are used to indicate approaching traffic - route intersections. Keystone markers are for other purposes like indicating a specific type of route. Supplemental arrows are often for lane - use guidance and direction plates are for overall directional information, not specifically for intersection indication.

Answer:

C. junction plate