Sentence A is correctly punctuated.
I think I will wear tan pants and a green cotton shirt to school on Wednesday.
The other sentences have commas where they are not needed.
I'd say that what Twain uses to convey how ridiculous the king looked on the second night of the show is satire.
Satire is <span>the use of humor, irony, exaggeration, or ridicule to expose and criticize people's stupidity or vices, particularly in the context of contemporary politics and other topical issues.</span>
I would Say none of these are colloquialisms, I looked up what colloquialisms are, unless these words specifically are in sayings, none of them are <span>colloquialisms</span>
Effect
Explanation read it out loud and you’ll know what I mean it makes more sense than the other word