Pegasus spies on all the data on a phone. If a phone is really infected with that, then location access is the least of your worries. But this is not relevant to this post anyway, because 99,9% of people will never be a valid target for such high-level spyware.

Stop spreading rumours.

Just disable the location permissions. And turn off GPS when you dont actively need it.

A3. Not A2.

https://en.wikipedia.org/wiki/ISO_216