Support an answer about a passage by pointing to the exact words in the text that prove it.
Text evidence means using the EXACT words from a passage to prove your answer, instead of just guessing. Good readers do not say "I think so" -- they say "I know so, because the text says..." and then point to the proof.
Text evidence can be a whole sentence or just a phrase. The key is that someone else could look at the same page and find the exact words you are pointing to.
Mastery looks like: They back up an answer with the exact words from the passage, not a guess or a paraphrase.
Common stumbles: Answering from memory or outside knowledge instead of the passage; picking a sentence that sounds close but does not actually answer the question.