Question

which source helps you find words that mean the same thing as other words? a atlas b dictionary c encyclopedia d thesaurus

Explanation:

• An atlas is a collection of maps, so it's not for finding synonyms.
• A dictionary primarily gives definitions, pronunciations, and sometimes usage of words, not mainly synonyms.
• An encyclopedia provides detailed information on various topics, not synonyms of words.
• A thesaurus is specifically designed to help find words with similar meanings (synonyms) and also antonyms in some cases.

Answer:

D. thesaurus