How can prior written notification of a community mosquito control target area be conveyed?

The correct answer, which involves written notification directly to residents, is significant because it ensures that individuals within the target area receive specific and clear information about mosquito control efforts. This method allows for direct communication with those most affected, giving them the details they need concerning the timing and nature of the control measures. This personal touch can foster trust and understanding within the community, as residents may have the opportunity to ask questions or express concerns directly.

While other options like newspapers, television, and public signboards can disseminate information to a broader audience, they may not effectively reach every resident or provide the level of clarity and detail that direct communication can achieve. For instance, not everyone may regularly check their local newspaper or watch local television broadcasts, leading to potential gaps in information delivery. Public signboards can inform passersby, but they may not capture the attention of all residents, and the information might not be as detailed or personalized as a written notification. Thus, direct written notification is the most effective method for ensuring that all residents in a mosquito control target area are well informed.