When incorporating direct quotations into writing, what is the function of brackets?

best possible answer

brackets are one of the punctuation tools used to prevent plagiarism. brackets set apart additions or changes in the direct quotation made by the writer. they can indicate a change in verb tense, added words or punctuation, substituted words, or errors ([sic]). it is important to note that brackets must come in pairs.

Plsss don’t worry about the green strip can someone pls

Which words in this excerpt from the count of monte cristo can be used as synonyms to determine the meaning of the word grotto? dant? s entered the second grotto. the second grotto was lower and more gloomy than the first; the air that could only enter by the newly formed opening had the mephitic smell dant? s was surprised not to find in the outer cavern. he waited in order to allow pure air to displace the foul atmosphere, and then went on. 1. air 2. opening 3. mephitic 4. cavern 5. pure 6. atmosphere

Aprimary source: a- may be biased b- is never biased c- cannot possibly have bias d- none of the above