How did the plains indians use dogs? ?

The provided question lacks the choices, however, the choices of the question are as follows:

a. the right to property is not guaranteed in command economies.

b. in a chaotic market consumers might lose track of whose property belongs to whom.

c. producers must be ensured that they will be able to sell their products and keep their revenues.

d. if buyers have a right to the property of sellers, then they will be more likely to engage in free trade?

The correct answer would be - producers must be ensured that they will be able to sell their products and keep their revenues.

Explanation:

Property rights are rights provided the right of ownership and how one can use its property or resources. It is decided by the administrations who owned and why which affects the capacity to join in the economy.

Property rights ensure the producers that they are able to sell their products and keep the product revenues in the market economy, it required to be protected by the administrations.