Answer:
The correct answer is the writer must correct the word.
Step-by-step explanation:
When we use an automatic word corrector, and we erroneously write some of the words, the proofreader will give us suggestions of words that are similar, since it is likely that we have spelled it wrong.
If this doesn't happen, it is because it doesn't not know what the word is, so the proofreader will give you the option to add it manually to its dictionary, and thus save it in its database so that the next time you use it it does not appear again as an error.