According to Smith how does competition in an industry directly benefit the public

The public will see lower prices as companies compete for customers.

Explanation:

The competition between the different companies would cause them to have to lower the costs of their products so that more customers would come to their store, lower prices makes it easier for low income families to get what they need/want.

I hope this helps!! :)

formulating the initial idea for the policy

answer is c.

b: to eliminate competition from other farmers