Why do governments regulate natural monopolies?
to allow additional producers
to enter a market to prevent a monopoly from abusing its customers
to lower the costs of production or distribution
to provide companies with greater access to raw materials

correct b

To enter a market to prevent a monopoly from abusing its customers

Explanation:

The government performs actions of economic regulation that affect the public (consumer) interests by controlling natural monopolies. A monopoly is when production is done by one or just a few companies.  Some producers would use regulations to fix the price, block entry, and increase profits, so they must be regulated to avoid abuses.

i think it is the byzantine empire