For much of the 20th century, china's economy was which of the basic economies: traditional, command, market?

The correct answer is command economy.

China maintained a command economy for decades before transitioning to a mixed economy that features both communistic and capitalistic elements.

A command economy is controlled by the government and not the free market. The government determines what goods should be produced, how many of them and at what price. Command economies exist in communist or socialist states such as the former Soviet Union, North Korea, Cuba and China.

Another term for China's economy is socialist market economy. China has a mix of government-owned businesses as well as tightly controlled private businesses.

there are no options provided but you can choose among the following gender-neutral pronouns: zir, hir, eir, vis, tem, eir.

in the normal course of maintaining a pronoun-antecedent agreement, we could have used the words his or her but since we are also required to use gender-neutral language, we need to replace it with its equivalent gender-neutral pronoun.

this is not a question