My strong preference is #1.
My 2nd preference is #3.
#2 I would only bring out if you genuinely do flounder when communicating AND you expect it to happen during the case. I'm a big fan of bringing the elephant out of the room early. So, I could see this answer being used to "own" your weakness, and flag it even before you begin the case. And, you can even make light of it or joke a little bit when it does happen!
In terms of #1 make sure to highlight that, if you are asked to speak you have no problem. Frame it more as a "team player" or "I don't want to contradict my peers" sort of approach. And say you're working on speaking with your team lead before each meeting to figure out what topics/situations are fair game for you to interject on.
In terms of #3 you need to be really careful here. Make sure that "too long" means like an hour, not 3 days. Make sure that you have a mitigation for this. Make sure it's clear that the only thing this hurts is you as you may work an hour or two later. Make sure it's clear that this has never jeopardized a project/deliverable.