Exterior porches are noted for which of the following features?

The correct choice emphasizes that exterior porches are typically associated with seasonal use and may have storm windows or doors. This aligns with the common perception and design of porches, which are often utilized primarily during particular seasons—such as spring or summer—serving as transitional spaces between the indoors and outdoors.

Additionally, the presence of storm windows or doors on porches is a practical feature that helps protect the area from inclement weather and allows for its use in different conditions, making it adaptable for the changing seasons. Many homeowners add these features to maximize the comfort and usability of their porches while providing some level of protection from the elements.

While exterior porches can be designed and used in a variety of ways, they are generally not intended for full-time living or as regular rooms, which is why other options do not quite capture their typical characteristics. Storm windows and seasonal adaptations are specifically beneficial for enhancing the porch's usability during varying climate conditions, reinforcing that seasonal use is a defining aspect of porches.