Which of the following benefits is NOT associated with the discovery of fire by early humans?

The discovery of fire by early humans brought several significant benefits that contributed to their survival and advancement. Among these, keeping warm, lengthening the day, and keeping predators away are well-documented advantages of controlling fire.

Keeping warm is crucial for survival, especially in colder climates. Fire provides heat, allowing early humans to endure lower temperatures and expand their habitats. Lengthening the day refers to the ability to use fire for light, enabling activities and social interactions to continue after sunset. Fire also served as a deterrent against predators, who are often wary of flames.

On the other hand, building shelters is not directly associated with the discovery of fire. Although fire may enhance conditions within a shelter, such as providing warmth or protection from pests, the primary purpose of fire is not to facilitate shelter construction but rather to support survival activities. Early humans could have constructed various types of shelters using natural materials long before mastering fire. Thus, the association of building shelters with the discovery of fire does not hold as strongly as the other benefits listed.