Tongue is the correct spelling.
C is the answer. Sleep deprivation is the only claim that has hard evidence behind it, the others are unsupported or speculation.
If you are making a visual presentation like a power point or a poster using neutral colors make it look more professional. Depending on what the topic is you could also choose colors that tie in somehow with what you are presenting.
Answer:
What are two characteristics that are caused by your social anxiety? Maybe shy, and or quiet? nervous, maybe awkward? There, that's the first line which is repeated at the beginning of each stanza.
What are you curious about? Maybe what it's like to easily connect with people, or maybe you're wondering how to do that.
The next line is "I hear". What do you hear in a situation where you get social anxiety? Conversation? Laughter?
Same with the next line, "I see". Do you see groups of people, or are you just staring at the floor or your phone?
See if you can go through the poem and answer each question with a simple word or two, afterwards you can revise it so it makes more sense. Hope this helps!