C. It is healthier to eat a balanced diet that to try "fad diets"
The correct answer for this question is this one:
"The type of channel do Speaker 1 and Speaker 2 use in their communication is that they are directly receive the content of the message via person-to-person, without any device like telephone, sms, or someone who can deliver it to them personally.
I think that the best way is making a friend or teacher check it before you turn it in. So they can give feedback, catch errors, or anything else
