At Liberty High School, researchers passed out surveys at lunch about drug use and asked students to turn them in on their way out. They might not get accurate results because:
A. probably not all students returned them.
B. it was not a random sample.
C. All of these are correct. D. students at lunch might not be representative.

Why would nations in latin america be part of a mostly arab cartel group known as opec? a) latin america refused to do business with countries that were not part of opec. eliminate b) natural resources such as oil are a major economic development for some latin american countries. c) latin america has a long history of distrust of the united states and fears a take-over of oil fields. d) latin american nations such as venezuela needed in getting natural resources to other parts of the world. 15

Sociologists found that the effects of institutionalization on infants, i.e. lack of a caring environment, will result in slower development of their mental, physical, and emotional skills. true or false? ?

Because many successful business owners fail on their first attempts, the reader should assume that.