Final answer:
Traditional and command economies provide economic security to their citizens. This is contrasted with market economies, which tend to emphasize freedom, growth, and innovation.
Step-by-step explanation:
Traditional and command economies are economic systems where certain elements are emphasized over others. In the case of these two systems, the element that is offered in both is security. This security commonly refers to economic security, where the government provides a safety net for its citizens in areas like employment, basic needs, and protection from economic fluctuations.
In contrast, market economies often emphasize economic freedom, growth, and innovation due to private property rights which create incentives for individuals to be efficient and contribute to the overall economic prosperity. However, they might not offer the same level of security. Therefore, the answer to the student's question is b. security.