Answer the following comprehensively.

A. Will companies still be efficient assuming that the world resources are not scarce?

B. Why do people think at the margin?

C. Will people still respond even if there are no incentives offered? Why or why not?

D. What are the advantages if countries don't trade with one another? Give atleast 3 disadvantages.

E. What is the government's role here in the Philippines on the following and how do they intervene to improve the outcome?

a. Public schools for K-12?

b. Workplace safety regulations

c. Public Highways

d. Patent laws