What type of packages does the USPS consider as oversized?

The correct answer identifies oversized packages as those that exceed 108 inches in combined length and girth. The United States Postal Service (USPS) defines oversized packages based on this specific measurement, which combines the length and the measurement around the thickest part of the package (girth). This standard helps USPS efficiently categorize packages for shipping and delivery, ensuring that they can manage logistics effectively while adhering to set regulations for transport.

The other options do not meet the criteria for defining oversized packages according to USPS standards. For instance, while weight is a consideration for shipping, packages that weigh more than 70 pounds do not automatically classify as oversized based merely on weight. Similarly, sending a package via Priority Mail does not determine its size; packages in various classes can be oversized or not, depending on their dimensions. Lastly, the restriction based on height alone, such as being over 12 inches tall, does not encompass other crucial dimensions needed to identify an oversized package accurately. Hence, the defining measure relies on the cumulative length and girth standard set by USPS.