Question

Which of the following is an example of effective communication?

A. Having your rate match your pitch
B. Having your body language match your accent
C. Having your quality of voice match your diction
D. Having your tone match your body language

Answer 1

I would say either C and B because there both accurate but the best one is C because it would be the best choice 

Answer 2

I believe the correct answer is D. having your tone match your body language.
If you are angry, for example, your tone is likely going to be louder and more agitated. So obviously, if you want to get your message through, your body language will include a lot of abrupt movements and frowning facial expressions, etc. Otherwise, the person you are talking to may not understand the extent of your emotions.