In argument, it is not difficult to find a reliable set of signs that point to the same conclusion

How does the viewer perceive a zoom-in?

a. the camera moves in on the object b. the image cuts to a closer view c. the image refocuses on the camera-far object d. the same as a dolly-in e. the object moves toward the screen (the viewer)

Research described in your text about mediated communication suggests that

a. it may be an advantage for creating a desired impression. b. it permits a responder to ignore a message rather than be unpleasant. c. it can lack the “richness” of many nonverbal channels. d. all of the above are supported by research. e. none of the above are supported by research.