What is the precipitate most likely to be?

The Ksp is a way of talking about solubility as an equilibrium. The smaller the Ksp the samller the formal solubility in moles per liter provided all the salts are of the same stoichiometry that is one Ag and the corresponding one anion.So AgI has the smallest Ksp and will therefore have the lowest solubility compared to the others. This AgI (e) will be that precipitate