When would an applicator likely use a nonselective herbicide?

Using a nonselective herbicide is particularly appropriate for completely clearing a field for planting because these herbicides are designed to kill all vegetation they come into contact with, including grasses, broadleaf plants, and even weeds. This capability makes them effective when the goal is to remove existing plant material entirely before establishing a new crop or planting new vegetation. By eliminating all plants in the area, the applicator can establish a clean slate, minimizing competition for nutrients, water, and sunlight that new plants require to thrive.

In contrast, the other options focus on managing or protecting existing vegetation, which would not align with the broad-spectrum action of nonselective herbicides. When an applicator aims to protect native species, manage specific weeds in lawns, or enhance aesthetic plant growth, selective herbicides or other management strategies would be more appropriate as they can target specific plants while leaving others unharmed.