The choice is about distractions and meeting the conditions for the at home-testing.
If your room is not relatively empty. If your room is not quietThen you could be rejected and have to reschedule
also, if testing from home. you will not be able to use paper and pencil at all. You'll have to use the most basic digital "scratch paper" you'll be able to access on the screen. You'll not be happy with it.
I've done both. The controlled testing environment I think is better, less convenient but better. I felt very paranoid in the home testing... of noises that I couldn't control. I couldn't guarantee someone wasn't going to walk into a room., or a pet jumping up on the computer. Anything like that is up to the proctor of whether that violates the conditions. And everyone of them is different. I have taken probably 10 exams like this during COVID era, each one was different. One didn't want me to have anything on the desk. One told me to stop reading the question out loud. I had some that didn't say anything and others who wanted me to pick up the computer and look around the entire room. and ask me to even pick up the chair and show me the bottom and said I shouldn't be looking down or around. so...you pick.