Final answer:
False, Efficiency is not solely based on the lowest cost; it also includes quality and speed of cleaning. In a shared cleaning scenario, assigning tasks where one is most efficient makes sense, but can lead to resentment. This is similar to the concept of specialization and trade in economics.
Step-by-step explanation:
Efficiency in cleaning involves both the cost and the quality of cleaning, as well as the time it takes to clean. A person who cleans quickly and thoroughly for a reasonable cost could be considered more efficient than someone who simply has the lowest cost but takes longer or does not clean as well. Considering the scenario where one individual is significantly faster at performing certain tasks, it's rational for them to focus on those tasks to maximize overall efficiency. However, this may lead to issues such as an unbalanced workload and potential resentment among roommates. A trade-related analogy could be in specialization and trade, where each country focuses on producing goods they are most efficient at, and then trades with others, potentially leading to disputes if perceived imbalances arise.