Which of the following is an assumption of command economies? A. The means of production will be privately owned.
B. Wealth and resources will be equally distributed.
C. The government's economic role will be minimal.
D. Transactions will be voluntary on both the part of the buyer and the seller.

In a study, people were asked to imagine simple occasions that made them happy and to remember events that made them feel proud about themselves. it was observed that the subjects developed an increasingly positive attitude. these changes are known to be healthy, leading to greater physical activity and reducing unhealthy habits. based on this excerpt, we can conclude that a positive attitude .