HELP PLEASE THIS IS CONFUSING

Number of moles = 8.3 x 10⁻¹³

The mole is the number of particles(molecules, atoms, ions) contained in a substance

1 mol = 6.02.10²³  particles

Can be formulated

N=n x No

N = number of particles

n = mol

No = Avogadro's =  6.02.10²³

5 x 10¹¹ atoms of Silver :

answer; i believe the correct answer is (solid gold);