International trade benefits nations by enabling them to acquire goods and services they cannot produce efficiently. This mutual advantage is realized through trade agreements, facilitating the exchange of resources, technology, and expertise.
The rationale is sound: international trade enables countries to obtain necessary items from other nations. Consequently, the assertion and reason are validly linked, with the reason elucidating the benefits of international trade.
Therefore, the correct choice is (A) Both the assertion and reason are true, and the reason correctly explains the assertion.