Under what condition can dogs be used to harass geese?

Using dogs to harass geese is regulated to protect the birds, particularly during sensitive times in their life cycle, such as when they have goslings. The correct answer states that dogs can be used for this purpose anytime except when goslings are present or during specific summer months. This understanding aligns with wildlife management practices that aim to minimize stress on vulnerable populations of geese, as well as comply with regulations set by wildlife authorities.

During the time when geese have goslings, the parent geese are especially protective, which can lead to aggressive behavior if they feel threatened. Therefore, allowing dog harassment during this period could cause unnecessary distress and potentially harm the young birds. The regulation is also designed to uphold ethical treatment of wildlife and ensure that any control measure is commensurate with the protection of species during critical developmental stages.

In contrast, the other options suggest conditions that either do not provide enough protection for young geese or imply that harassment could occur freely, which would not be aligned with responsible wildlife management principles.