In his research on college students, Professor Gupta is interested in grouping several of his variables on study habits into a smaller set of underlying factors which measure student success in college. He is using the method of:

Nigeria's debt repayments and rescheduling in 2006–2007 were necessary to fix the fiscal mismanagement associated with the oil boom of the 1970s

Indicate whether this statement is true or false.

What institutional feature of American politics effectively prevents the development of competitive third parties in the United States?

a. a constitutional restriction b. winner take all system c. multi-member districts d. open-primary systems -