Which best explains why africa and east asia are ideal locations for companies to find offshore labor?

i. labor is generally inexpensive.
ii. there is a large poll of educated laborers.
iii. industrial practices are well developed.
iv. laborers have access to the area’s rich resources.

i only
iii only
ii and iii
ii and iv
iii and iv

II and IV

Why the II can't explain that:

There aren't educated laborers, cause the multinational companies uses the first labourers they found, so the average of them is not always qualified, and the most of them is poor and have not get an instruction.

Why the III can't explain that: In some parts of Africa and Asia, where labourers mine,work or do other things for multinational companies, the industries are not developed at all, and in case the companies their self had to develop ones in those territories

from the word list given, the most suitable words that relate to the reason information were written would be:  

objectivity: lack of bias, judgment, or prejudice

accuracy: free of mistakes, to be correct

authority: the ability to tell people what to do or believe in

content: to be satisfied  

it can be said that the author made the article to present objectivity, to provide accurate information, to be the authority in the subject that he or she writes, and to be satisfied of the information quality given out.