24 point use diagrams of particles to explain why four atoms of silver can produce only two molecules of silver sulfide, even when is an excess of sulfur atoms.

See picture attached

Explanation:

On the left of the picture it can be seen a diagrams of particles where red circles represents Silver atoms and blue circles represents Sulfur atoms. A molecule of silver sulfide is composed by two atoms of silver and one atom of sulfur, then if four silver atoms are present, only 2 molecules of silver sulfide can be made,  as it can be seen on the right of the picture.

it's all four options.