Answer:
The correct answer is: buyers of salt and the sellers of caviar.
Explanation:
The demand for salt is inelastic while its supply is elastic.
The demand for caviar is elastic while its supply is inelastic.
A tax worth $1 is imposed on both salt and caviar.
The tax burden will be shared between the buyers and sellers.
Who shares the most burden depends on the elasticity of demand and supply. Imposition will cause the price to change increasing the price paid by buyers and decreasing the price received by the sellers.
Among these whoever has the most inelastic response to the change in price will bear most of the burden.
Since demand for salt is inelastic, its buyers will bear most of the burden. While the supply of caviar is inelastic so its sellers will bear most of the burden.