Question

1. part a: what is the best reason to use a dictionary instead of a thesaurus? to confirm a words correct spelling and meaning to find more interesting word choices to shorten a sentence to make writing sound more formal

Explanation:

A dictionary provides correct spellings and meanings of words. A thesaurus is used for finding synonyms and more interesting word - choices. Shortening a sentence or making writing more formal is not the main function of a dictionary.

Answer:

To confirm a word's correct spelling and meaning