In a command economy, the central government alone decide the production and consumption of goods and services

This statement is true. A command economy, also known as centrally planned economy, is an economic system in which the central government makes all the  decisions on the production and consumption of goods and services. In other  words, it is an economic system in which decisions on both production and consumption of goods and services are based on voluntary exchange in markets.

The correct answer is a. when they started making tools that will them in cultivating lands, they could raise crops and that made them attached to one place for a longer period of time. after that, they started domesticating animals and building their own permanent settlements that resemble the ones we have today.