The sentence that does not use slang or jargon is:
After I arrived home from work, I plopped down on the couch and turned on the television.
<h3>What is slang?</h3>
Slangs are some kind of words that are used in informal situations. All the sentences above use slang and jargon, but sentence C does not use such informal language.
All the words used can be applied in formal language. Plopped in that instance means a clumsy way of sitting down. So option C is right.
