The correct answer is C. One country has an absolute advantage over another country when it can produce a certain good or service using fewer resources (such as labor, capital, or materials) than the other country. This means that the country with the absolute advantage can produce the good or service more efficiently and at a lower cost, making it more competitive in the global marketplace.
In option C, if one country has lower production costs than another, it can produce the same amount of goods or services at a lower cost, which would give it an absolute advantage. On the other hand, options A, B, and D do not necessarily indicate that one country has an absolute advantage over another. For example, a country with lower taxes or higher wages might be able to attract more investment or skilled workers, but this doesn't necessarily mean it can produce goods or services more efficiently than another country. Similarly, a country with more advanced infrastructure might have certain advantages, but this doesn't necessarily translate to an absolute advantage in all industries.