Which best describes a benefit of a trade surplus?

A trade surplus occurs when a country's exports exceed its imports, leading to a positive balance of trade. One of the primary benefits of a trade surplus is a stronger currency value. When a country exports more than it imports, there is an increased demand for its currency, as foreign buyers need to purchase the local currency to pay for the exported goods. This heightened demand can lead to an appreciation of the currency, which can strengthen its value in the foreign exchange market.

A stronger currency has several advantages. It can reduce the cost of importing goods and services, making it cheaper for consumers and businesses that rely on imported materials. Additionally, a robust currency can enhance the purchasing power of citizens when traveling abroad or purchasing foreign goods.

The other options do not reflect the benefits associated with a trade surplus. Higher levels of national debt can occur for various reasons unrelated to trade balances. Increased foreign investment typically stems from several factors, including business climate and economic stability, rather than a specific trade surplus. Lastly, greater unemployment rates are generally indicative of economic challenges rather than benefits, and they usually do not correlate with the positive attributes of a trade surplus. Thus, the benefit of a stronger currency value is a key outcome of maintaining a trade surplus.