Athesaurus is used to a)determine the cause of important historical events b)locate a country on a map of the world c)look up the precise definition of a word d)find the synonyms and antonyms of a word

A thesaurus is used to d) Find the synonyms and antonyms of a word.

A thesaurus is a reference work, usually in the form of a book, that provides a group of synonyms for the words of a given language. Some books provide antonyms as well. It is a great assistant to help readers and writers to choose the word that best fits for their idea.

Unlike dictionaries, this type of publication doesn't provide definitions and don't list the words in alphabetical order.

i lokey dunno!

on the low like i frrl frrl dunno jitt

two factors or characteristics of a chapter that might make it difficult to read would be words i don't understand, or if i don't fully understand what's going on in the chapter. strategies i can use to get through the difficult material would be a dictionary, and re-reading previous chapters to get a better grasp of what the author is trying to say.