in a way it's dum but it also help them prodict future viruses like them could have predicted the Corona but they was to lazy to identify it.
Answer: Know what you are talking about, know when it is the right time for you to talk, have materials/ notes on hand, be confident (but not overly confident), and stay calm
Explanation:
D. By using imaginative and descriptive language
First of all I assume it's supposed to "at times is transparent", but it is indeed a metaphor.
Answer:
People will change their opinions to agree with others, even strangers. B