Answer :
Final answer:
The correct option is 1) Which is Shoulder Signs. The sign used to indicate a lower or unpaved shoulder is the Shoulder Drop Off Sign, which warns drivers of potential dangers and advises caution near the road's edge.
Explanation:
The correct option is 1) which is Shoulder Drop Off Sign is the sign used to indicate a shoulder that is lower than the road or not paved. This sign warns drivers of potential hazards and encourages them to be cautious near the edge of the road.