Question

One problem with using e-mail is that ______. a. It can be perceived as being too casual b. It is never appropriate for business communication. c. It takes too long to write and send e-mails. d. None of the above

Answer 1

I personally feel that e-mail can be used for more business settings and as a more formal approach to things as opposed to a text, but option C seems to be more of an opinion.  I would go with C or D.