The electron configuration of atoms of a noble gas would be:

1s22s22p6
1s22s22p3
1s22s2
1s22s22p4
none of the above

Noble gas must have completely filled orbitals, which can be 2, 10, 18, 36 etc.
Here, only first one has completely filled i.e., 10 electrons, so it is inert.

In short, Your Answer would be Option A

Hope this helps!

a - base

b - exponent

so,

the base is 8the exponent is 3the exponent tells you to multiply 8 together three timesthe expanded form is 8*8*8