Final answer:
Honeybee proboscis extension is related to feeding behavior. The proboscis allows the honeybee to drink nectar from flowers, providing them with energy.
Step-by-step explanation:
The proboscis extension in honeybees is related to their feeding behavior.
Honeybees use their proboscis, which is an elongated mouthpart, to extract nectar from flowers. The proboscis acts like a straw and allows the honeybee to drink the nectar.
This feeding behavior is crucial for honeybees as they rely on nectar as their primary source of energy.