The orbital with maximum energy is

Given below are two statements:
Statement $I$ : For a given shell,the total number of allowed orbitals is given by $n^2$.
Statement $II$ : For any subshell,the spatial orientation of the orbitals is given by $-l$ to $+l$ values including zero.
In the light of the above statements,choose the correct answer from the options given below:

Explain the Aufbau principle with an example.

Which of the following rules describes the order in which electrons fill various orbitals?

What is the atomic number of the element with $M^{2+}$ ion having electronic configuration $[Ar] 3d^8$?

The electronic configuration of the element with atomic number $24$ is: