Iiaat to not want to talk at certain times??? Like someone will ask me a question and I just won't answer. Or like most days my dad will tall me that he's going outside and to be ready to leave for school, and I just won't answer. My parents are like getting really angry cuz they hate when I don't answer but I don't know why I dont?
If you think you probably can talk but it’s difficult or you’re not really feeling up to it, that would be going semiverbal. If you literally cannot bring yourself to talk no matter how hard you try then that is going nonverbal. Both of these are common with autism.
For things like your parents wanting confirmation that you heard them, you could maybe work out a system where they make sure you’re in their line of sight when they’re telling you something and you can give a thumbs up or some other signal to show you heard them without having to verbally answer. This can help alleviate at least some of their annoyance if they think you’re just ignoring them.
I know several other autistic people who don’t “confirm” in the way you described because they already know they heard what the other person told them and they already know how they are going to react. It may not occur to them that the other person involved does not and is waiting for a reaction / confirmation or a visible cue that what was said has been noted and understood.
A lot of autistic people also don’t do things such as nodding or shaking our heads in confirmation or denial to things.
This would be difficulties with perspective-taking and differences in non-verbal communication, respectively, both autistic things.