Texting is most similar to what form of computer-mediated communication?

When people communicate with specific goals in mind that they want to accomplish, this shows how communication is

a. Dialectical b. Strategic c. Consequential d. Structural

When using presentation aids, speakers should always

a. use them when practicing their presentations. b. be prepared to speak without them if necessary. c. be careful not to speak to or read from them. d. all of the above are correct.