Which of the following is a potential consequence of white grub infestations in lawns?

White grub infestations in lawns can lead to significant damage, particularly by causing grass decay and die-off. These grubs are the larvae of various beetle species, such as Japanese beetles or June bugs, and they feed on the roots of grass plants. This root feeding can severely weaken and ultimately kill the grass, resulting in brown patches and a decline in lawn health.

While an improved lawn health, increased soil fertility, and enhanced aesthetic appeal are generally positive outcomes that might be desired in lawn maintenance, they are not associated with the consequences of white grub infestations. In fact, the presence of white grubs has the opposite effect, contributing to lawn deterioration and the loss of grass vitality. Therefore, the correct identification of grass decay and die-off as a potential consequence highlights the harmful impact of these pests on lawn conditions.