What is true about electrons in the modern model of atom?

Athey are contained within the nucleus itself
Btheir position can be accurately determined
Cthey circle the nucleus in perfectly round orbits
Dtheir position can be predicted using probability

Verified Answer :

I'm pretty sure the correct answer is C. they circle the nucleus in perfectly round orbits

Electrons are found in the cloud surrounding the nucleus, therefore a is wrong.
You can only assume their general location, thus B is wrong. C describes the Bohr model, which is quite old and disproven.
D is your answer.