The production of a good with positive externalities will increase when:

Question $6$ options:

$1)$

the government provides a subsidy for the good.

$2)$

the marginal internal cost of the good is higher than the marginal total cost.

$3)$

there is a price ceiling of zero in the market.

$4)$

the producer sells the good for a very high price markup.

$5)$

there are a large number of buyers and sellers in the market