What is one primary offensive task of mortars?

The primary offensive task of mortars is to destroy or neutralize enemy units. Mortars are indirect fire weapons that are particularly effective in delivering explosive ordnance onto enemy positions. They enable ground forces to engage targets that may be out of direct line of sight, allowing for effective suppression, disruption, or destruction of enemy forces, fortifications, and equipment.

Mortars can create a significant psychological impact on the enemy while also providing support for maneuvering units by targeting concentrations of troops or vehicles. Their ability to fire high-explosive, smoke, and illumination rounds makes them versatile tools in offensive operations. Consequently, when "destroy or neutralize enemy units" is used as a task, it encapsulates the mortar's role in supporting infantry operations through firepower aimed directly at defeating the adversary.

The alternative options do not focus on this primary function of mortars. Facilitating air support coordination pertains to different tactical operations involving aircraft. Securing supply routes falls under logistical operations, and providing transportation for infantry is related to movement and mobility rather than direct combat engagement.