Question

Which best describes the nucleus of an atom?
A) It is the densest part of the atom
B) It has neutrons
C) It has protons
D) All of the above

Answer 1

d) all of the above
it is densest and it also contains protons and neutrons both

Answer 2

All are correct as nucleus contains both protons and neutrons thus it becomes denser part of atom while the rest part of atom is mostly empty orbitals in which electrons are in motion.