Brad recently earned a real estate license in missouri and has interviewed with several groups to find a job. all have told him that his income will be based on a percentage of his real estate sales for the month. brad will be paid

on commission basis

Explanation: Commission is the amount of money usually paid to the sales person/employee on the basis of product they sell. The payment is dependent upon the amount of product , higher the product sale means high payment for the employee.

Brad will also receive commission based payment. He will be getting the payment according to the real estate sale percentage he makes in a month.

the answer is

a) revise existing treaties

b) do away with political alliances

c) prevent the spread of communism

d) bring an end to european colonization

the main goal of the southeast asia treaty organization was to prevent the spread of communism in southeast asia.

i am pretty sure it is d.