Which function is associated with surface prep priming?

Answer: A — Reduces possibility of slip plane, holds surface together under traffic, protects base from weather.

Priming a prepared surface creates a bonding layer that connects the base to the new asphalt, reducing the chance of separation under traffic. This bonding also helps hold the surface together and shields the base from moisture and weather, which can weaken it over time. Those effects—the improved adhesion between layers and moisture protection—are exactly what surface prep priming is meant to provide, making this option the best fit. The other ideas describe changes to the asphalt itself, a cosmetic finish, or drainage improvements, none of which are the primary role of surface prep priming.