It's because the apostrophe takes place of the missing letter.
it is to it's
Jerome Kern is considered the father of musical theater.
Green orange violet / purple
Step-By-Step
1) Feeling nervous is totally fine, but try to be confident.
2) Make your presentation look good. Clean, neat, correct usage of words, etc
3) Try not to stutter
4) Try your all
5) Make presenting your presentation at least somewhat entertaining
And obviously
DON’T PROCRASTINATE
