Dave has made clear the importance of articulating an answer prior to reviewing the answer choices, which is obviously an essential strategy. However, I have noticed several types of questions where pre-phrasing may be a worse option than immediately reviewing the answer choices. Just off the top of my head, I encounter these types of questions often times with parallel reasoning and principle questions, although there might be other instances. Overall, are there concrete times where it is recommended NOT to completely articulate an answer before reviewing the answer choices, because let's be honest, to fully articulate an answer (as opposed to consciously registering what an answer should roughly look like) is time consuming--particularly on the aforementioned types of questions...
Thanks and good luck!