If you read ever your vocabulary will advance even more.
A run-on sentence actually refers to two or more sentences found in one, but not connected using conjunctions or any type of punctuation mark. Having this in mind, the correct answer is <span>C. Lindsey was exhausted she had not gotten enough sleep for weeks. </span>
When analyzing word choice, you need to look for context clues and read the sentence around the word that you are struggling on.
Business or things that have to do with trading in business