Question: You need to be able to quickly find a word in a text field. What should you do?

1. Create a text index on the field and do a $text Query.
2. Create an single field index in descending order, and do a query for the word.
3. Do a $text query.
4. Create a $regex on the fields, and do a $regex query.

Answer: The correct answer of the above question is Option C:Do a $text query.