7th grade help me plzzz

Journal entry

Step-by-step explanation:

A thesaurus is a reference work to find synonyms of words, and that doesn't have anything to do with what we're trying to find, so it's incorrectAn encyclopedia is a book that gives info on many subjects, and that has nothing to do with what we're trying to find, so it's incorrectA dictionary is recourse to find definitions of words, and that doesn't have to do with what we're trying to find, so it's incorrectA journal entry is exactly what is sounds like. Someone owned a journal and wrote in it. And, the journal comes directly from the time it was used.  It is a primary source. Therefore, that is the correct answer.

I hope this helps!