Like political parties, interest groupscompete for public office

The number of women mayors a. has decreased since 1973. b. increased to about 9 percent in cities of 30,000 to 50,000 since 1973, but stayed the same in cities withpopulations greater than 100,000

c. has stayed about the same since 1973. d. increased from 2 percent in 1973 to about 21 percent in cities with populations of 30,000 or more as of 2012.

In the Tuskegee study,

a. subjects were exposed to radiation. b. the effects of syphilis were observed. c. the study was terminated by the researchers when penicillin was found to be an effective treatment for syphilis. d. Both B and C are true.