Which of the following factors can influence control over an aerial apparatus?

Control over an aerial apparatus is influenced by multiple factors that interact in various ways during operations. Wind conditions can significantly impact the stability and maneuverability of the aerial device, as strong or gusty winds can push the apparatus off course or induce unwanted movements. This is particularly crucial when the aerial is extended, as the larger surface area makes it more susceptible to wind effects.

The surrounding environment also plays a vital role. Obstacles such as buildings, trees, and power lines can restrict the aerial apparatus's operational capabilities and create hazards for the driver/operator and personnel working on the apparatus. Awareness of the space around the aerial is essential for safe maneuvering and effective operations.

Lastly, the height of the ladder can further influence control. As the ladder is extended to greater heights, the center of gravity shifts, which can affect stability and the operator's ability to manage the apparatus effectively. Higher ladders may also have a greater risk of swaying or oscillating due to wind or movement.

Considering all these factors—wind conditions, the surrounding environment, and the height of the ladder—helps ensure that operators maintain proper control over the aerial apparatus, making the selected answer comprehensive and accurate.