A thesaurus is a book that gives synonyms and antonyms for words that you look up. So, by looking up a word and finding better replacements, it can increase the quality of your work, help avoid repeating words, and help you add creativity. So, the answer is all of these.
Any organic molecule (a molecule containing carbon chains) with covalently bonds chlorine that alter its properties.
A - <span>he man who delivers our mail was late today. </span>
The answer is c because they were the people that were in charge of the concentration camps