#1
Well, obviously you need a case large enough for a dreadnought, which is a large guitar. However, the dreadnought is about the commonest size, and it most likely is what is meant by "standard acoustic guitar" in the case description. You would need to ask the retailer to be sure.

I do not recommend that model if you're looking for something to learn on, though. They are poorly built, with no quality control, and tend to need a lot of work to make them playable.

P.S. Genuine spruce my foot. I worked on one recently to try and make it usable, and it's plywood.