__________ feminists find important differences between men and women that are arbitrary and flexible, whereas __________ feminists consider those differences trivial.

President Barack Obama has put the most focus on fighting terrorism

a. in Iraq. b. in Palestinian-controlled territories. c. in Afghanistan. d. in the Western Hemisphere. e. within the United States.

Susan has twelve subjects drop out of her study. Which threat to internal validity must she consider?

a) mortality b) history c) selection d) randomization