a) and b) should be the only options you should be considering, b) only if you're happy with doing that, followed by a) when it's evident a landing clearance isn't going to happen OR you can't land safely from it anyway
Bear this in mind - if you're given a continue then do that and say nothing. There's nothing worse from an ATC perspective than trying to issue a landing clearance and the frequency is blocked. Now, bearing in mind one of the attributes of being an ATCO is prioritisation then no matter whet everyone else is saying the call that deserves priority is your landing clearance - so you should get that without you having to re-request it. Everyone else should then be dealt with after you.
And if that doesn't happen - then go-around, and call going around when you are able to get a word in.
DO NOT, under any circumstances, do c) - then the paperwork starts and it won't go well for you.