Which statement explains why social media has impacted political campaigns? a. it is usually a quick and effective form of mass communication. b. it is always a free way for politicians to advertise. c. it is often not an effective way for citizens to criticize policy ideas. d. it is never difficult for a politician to get their message to voters.

According to the federal regulations, which of the following studies meets the definition of research with human subjects? a. a researcher uses the customs office’s passenger lists for ships bringing immigrants to the us between 1820-1845 to track the numbers of immigrants from certain ethnic groups.b. a researcher conducts a linguistic study of comments posted on a local public blog.c. a developmental psychologist videotapes interactions between groups of toddlers and their care givers to determine which intervention methods most effectively manage aggression.d. a researcher asks the director of a local free clinic about the number of patients in the last two years with newly diagnosed hiv/aids.

Census data is an example of: public information. private behavior. private information. public behavior.

The graph shows a demand curve. what does the data shown in this graph represent? a decrease in quantity demanded as prices decrease an increase in price as quantity demanded decreases a decrease in income as quantity demanded increases an increase in quantity demanded as prices decrease