Questions: A common, contemporary alternative to central planning at the national level is a: market system with currency pricing. market system with barter. system of regional planning within a nation. system of international planning.

The answer is: market system with currency pricing.

Explanation for each option:

1. Market system with currency pricing: This is the correct answer. In contemporary economies, a market system where goods and services are exchanged using currency is the most common alternative to central planning. This system relies on supply and demand to determine prices, allowing for efficient allocation of resources.

2. Market system with barter: This option is incorrect. While barter systems do exist, they are not common at the national level in contemporary economies. Barter systems involve the direct exchange of goods and services without using money, which can be inefficient for large-scale economies.

3. System of regional planning within a nation: This option is incorrect as a common alternative to central planning. While regional planning can occur within a nation, it typically complements rather than replaces national economic systems. It focuses on specific areas rather than the entire national economy.

4. System of international planning: This option is incorrect. International planning involves coordination between countries, but it is not a common alternative to national central planning. Most countries operate independently with their own economic systems, although they may participate in international agreements and organizations.