Final answer:
In a command economy, the personal ownership of property and the influence of consumer demand on the market are prohibited. The government owns the means of production and controls the production and distribution of goods and services.
Step-by-step explanation:
In a command economy, certain economic freedoms that are typically found in a market economy are prohibited. One major prohibition is the personal ownership of property (c), as the means of production are owned by the government. Another aspect that is suppressed is the influence of consumer demand (d) on the market, since the government plans and controls the production and distribution of goods and services, rather than market forces like supply and demand.
This system contrasts with a market economy where private individuals or businesses own capital goods and property rights are protected by law. In a command economy, however, the government has the power to control major sectors of the economy, decide the types and quantities of goods produced, set the prices, and allocate resources. Thus, in such economy, options a, b, and e are actually features of a command economy, not prohibitions.