Which of the following describes the lifespan of a typical rat?

The lifespan of a typical rat usually falls within the range of 2 to 3 years. This time frame reflects a general understanding of the biology and life cycle of domestic rats, such as the common species used in laboratories and as pets, specifically the brown rat.

While several factors can influence longevity, including genetics, diet, environment, and health care, the average lifespan for a well-cared-for rat is around 2 to 3 years. Understanding this lifespan is crucial for anyone involved in pest management or as a pet owner, as it aids in planning for care, housing, and potential health issues that may arise during their life. Other options provided exceed the typical lifespan for most common rat species, making them less applicable in this context.