Final answer:
The maximum range of the M119A3 with RAP cannot be determined without additional information.
Step-by-step explanation:
The maximum range of the M119A3 with RAP (Rocket Assisted Projectile) cannot be determined based on the information provided. The range of a projectile depends on factors such as the initial velocity, launch angle, and presence of air resistance. To accurately determine the maximum range, these factors need to be specified. Without this information, it is not possible to determine whether the maximum range is 10 kilometers, 15 kilometers, 20 kilometers, or 25 kilometers.