Although india has only 16 official languages, the people there speak more than languages.
(a.) 30
(b.) 50
(c.) 100
(d.) 800

which of the following is true of social classes?
(a.) people in most societies cannot improve their status.
(b.) they are based mainly on age.
(c.) people can improve their status by getting a good education.
(d.) they are based mainly on gender.

Martha participates in a research study in order to receive extra credit for her psychology class. when she arrives in the research office she is given a can of what looks and tastes like beer, but which actually contains no alcohol. in the adjoining room martha's classmate karen is also participating in the study. karen receives a can of alcoholic beer. if the experiment was designed to test the effects of alcohol on concentration, then who is exposed to the independent variable?