What should mortar crews assess before firing?

Before firing, mortar crews must undertake a comprehensive assessment that includes multiple factors essential to the success and accuracy of their operation. The correct choice highlights the necessity of evaluating visibility of the target, the quality of the ammunition, and the effect of environmental factors on trajectory.

Assessing the visibility of the target is crucial because it determines whether the crew can effectively engage the target with precision. If the target is obscured by obstacles or poor weather, the likelihood of hitting it diminishes significantly.

Evaluating the quality of the ammunition ensures that the rounds used are reliable and function correctly when fired. Any defects or issues with the ammunition can lead to malfunctions, which could jeopardize the mission's objectives and safety.

Considering the effect of environmental factors on trajectory is also vital. Factors such as wind speed, humidity, and temperature can all influence how a round travels through the air. Understanding these variables allows crews to adjust their calculations and improve accuracy.

Each of these elements plays a critical role in mortar operations, making it imperative that crews assess all of them before firing to increase the chances of successful engagement. Thus, the correct answer underscores the importance of a holistic approach to readiness in mortar operations.