Which part of bees' anatomy helps them detect sounds?

The antennae of bees play a crucial role in detecting sounds as well as other environmental cues. These sensory appendages are equipped with specialized sensory neurons that allow bees to perceive vibrations in the air, which is essential for communication and navigation within their environment.

When bees hear a sound, what they're actually detecting are the vibrations that create changes in the air pressure around them. The structure of the antennae is finely tuned to pick up these vibrations, making them an essential tool for bees not just in sensing sounds, but also for processing pheromones and other chemical signals important for their social structure and foraging behavior.

The other body parts listed serve different primary functions: the eyes are primarily for vision, the wings are essential for flight, and the legs are used for walking and carrying pollen. While some of these parts may have secondary roles in communication or interaction with the environment, it is the antennae that are specifically adapted for the detection of sounds and vibrations, making them the optimal choice for this question.