__________ design allows a researcher to test for causal relationships in situations where a true experimental design is difficult or inappropriate

Identify a perk associated with the presidency of the United States.

A. The president can start his or her own for-profit ventures. B. The president need not pay for the tuition of his or her children. C. The president is exempt from paying federal taxes. D. The president need not pay for his or her personal expenses. E. The president enjoys the use of the White House.

Which of the following groups arose from the rubble of war-torn Syria, Libya, and Iraq?

a. the Black Hand b. ISIS c. al Qaeda d. FARC