Which is the most reasonable estimate for 30% of 72?
7
14
21
28

Which of the following is an example of negative reinforcement? a.marty knocks over his mother's prize fern so she gives him a time out. b.gwen mows the lawn and her dad takes her out for ice cream. c.tara takes an aspirin, and her headache begins to go away. d. peter comes in late from his lunch and is fired from his job.

Which of the following is an advantage of pure capitalism

Which of the following would most likely cause a large number of density independent deaths in a population