Which part of speech is the underlined word in the sentence?

did you hear that new song on the radio?

a.
preposition

b.
adverb

c.
conjunction

d.
interjection

How did the growth of railroads american businesses expand

Which of the following  bestillustrates a negative reinforcer?               a.  copland gives up candy to stave off chronic acid indigestion.    b.  nancy learns that she prefers chocolate over vanilla.    c.  carmine changes his major to english lit after failing a math exam.    d.  on a hot day, lindberg always drinks lemonade.

As a senior student representative on the ethics advisory board of your university, you feel strongly that cheating on college exams is unethical. you never cheated on any exam. however, this semester your best friend was desperate for your , and you allowed him to take a quick "peek" at your answer sheet. since then, you feel uncomfortable every time you think of the situation. which of the following concepts best explains your psychological discomfort? a. job detachment b. cognitive dissonance c. emotional labor d. emotional dissonance e. affective detachment