TOEFL / Reading practice / Section 4EK3
Read an Academic Passage

When reuse needs a return journey

A reusable food container can replace many disposable ones, but its environmental advantage depends on what happens after the first use. Manufacturing a durable container may require more material than producing a light single-use version. Repeated use is what can spread that initial cost across many meals.

[A] A return system must make it practical for customers to bring containers back. [B] Convenient collection points can help, especially when people can return a container during a journey they would make anyway. [C] If returning it requires a separate long trip, transport can add costs that a simple count of avoided packages would miss. [D] Washing and inspection also belong in the comparison.

This means that a container and its return system should be evaluated together. A strong material is of limited value if most containers disappear after one meal. Conversely, a well-used return network may make a durable design worthwhile.

There is no single number of reuses that settles every comparison. The answer changes with manufacturing methods, transport distances, cleaning practices, and the disposable option being replaced. A claim about reuse is most informative when it explains these conditions rather than treating durability alone as proof of an overall benefit.

31. What is the passage mainly about?