A technologically mediated communication channel:

a. lacks nonverbal and visual images.
b. uses movements and gestures.
c. uses acronyms that stand for common phrases.
d. has the highest media richness and synchronicity.

c. uses acronyms that stand for common phrases.
Technologically mediated communication uses the same channels of face-to-face communication, though non-verbal cues such as movements, touch, and gestures are represented by visual symbols like emoticons. Acronyms are abbreviations that stand in for common phrases.