Which of the following is an adaptation of bees for thermoregulation in the hive?

Huddling together is an adaptation bees use for thermoregulation in the hive. During cooler temperatures, bees will cluster together in a tight formation to conserve heat. By doing so, they create a warmer microenvironment that helps maintain an optimal temperature for the brood and overall hive activity. This behavior is particularly important during the winter months when the external temperatures are low, and bees need to sustain the necessary warmth to survive.

While shivering their wings is also a method bees use to generate heat, it is not an adaptation specifically related to thermoregulation within the hive as much as it is a behavioral response to external cold. Pollen collection and nectar evaporation are behaviors associated with feeding and foraging rather than directly contributing to temperature management inside the hive.