Answer:
B. Mixed economies place some limits for the safety of society
Step-by-step explanation:
The mixed economies have characteristics of both command economies and market economies. While this type of economy is open to foreign investments and trade, as well as having a well developed private sector, the government is still in control of certain things. The governments tend to posses the most important and abundant natural resources in the economy, the ones that are crucial for the existence of the country. The reason for this is to provide safety for the society and stability of the economy, as well as not letting the most important assets of the economy to fall into the hands of someone else. A prime example of this type of economy in the present is China.