Which is an economic system run by the government
a. planned economy
b. a mixed economy
c. a free market economy
d. a black market economy

A. Planned economy

Explanation;

The planned economy is an economy in which production, investment, prices, and incomes are determined centrally by the government.such that decisions are made by a single authority rather than many market participants. It may use centralized, decentralized or participatory forms of economic planning.

a system in which products were made rapidly by machines

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)