Because countries cannot produce all of the goods/services that it needs, they must
1. Reduce the need for imports
2. Specialize and trade on a global scale
3. Eliminate consumption of scarce goods
4. Increase domestic production cost
The correct answer is 2. Specialize and trade on a global scale.
Countries cannot produce all the goods and services they need due to limitations such as resources, technology, and expertise. Therefore, they must specialize in producing certain products or services in which they have a comparative advantage, and then trade with other countries to obtain the goods and services they lack. This allows for a more efficient allocation of resources and provides access to a wider variety of goods and services, benefiting all countries involved in the global trade network.