The studio that introduced the first successful movie with sound was

Which of the following scenarios represents an example of a physical listening barrier?

a. Jeanine's excitement for her date on Saturday keeps her from focusing on the message. b. Julio refuses to listen to Sven because Sven has a thick accent. c. Lorelai can barely hear over the hum of the air-conditioning unit above her. d. Horatio listens to only the part of the message that interests him.

A speaker who gives an organized speech, makes clear claims, and incorporates specific details to support those claims has increased his or her credibility by displaying 

A. competence. B. dynamism. C. trustworthiness. D. similarity.