Which of these practices describe how producers in oligopolies generally try to create competition

Answer

By "providing monetary incentives," since this is how many people are motivated to produce in such societies in the first place. 

Explanation:

1(a) traditional methods of production are upheld.

2(d) to convert private property to state-owned property

3b) feudalism

5(a) question

6(c) to preserve the past

7(d) the opportunity to make a profit

8(b) get paid by the government

could not do 4 sorry. . hope this

the answer to your question is c