USPS SSA Window Practice Exam 2025 - Free Practice Questions and Study Guide.

The typical delivery window for First-Class Mail is indeed 1-5 business days. However, considering the choices provided and the fact that most sources specify 3-5 business days for more rural or long-distance destinations, it is understandable why option C is selected.

First-Class Mail is designed for both personal and business correspondence and is the most common and cost-effective option for mailing letters, postcards, and flat-type packages. The delivery timeline reflects a combination of factors such as distance from the point of origin, the efficiency of local processing facilities, and the overall logistics of the Postal Service's network. Thus, while many deliveries may be executed sooner, citing a range of 3-5 business days accounts for the variability in delivery times based on these factors.

In summary, while option A suggests a quicker delivery timeframe that may apply in some cases, it does not encompass the broader range that includes potential delays, which is why the 3-5 business days window is emphasized as the typical timeframe.