What could be a result of nectar shortage in a beehive?

When there is a shortage of nectar in a beehive, it can lead to increased competition and stress among the bees. In such situations, foraging bees may become more aggressive towards one another as they struggle to secure limited resources. This aggressive behavior often arises from the urgency to gather enough food for the colony's survival, leading to heightened tensions within the hive.

The other options, while relevant to hive dynamics, do not directly correlate with the immediate impact of a nectar shortage. For example, producing more drones typically occurs during times of plenty when the colony is in a growth phase. Increased honey production is also unlikely, as a lack of nectar means there is insufficient material for the bees to convert into honey. Similarly, colony expansion usually requires abundant resources, not a scarcity.