The best method for separating most of a solid from a gas quickly is filtration.
Filtration allows for the physical separation of solid particles from a gas or liquid based on size, making it effective for quickly separating solids suspended in a gaseous sample. The other methods listed, such as distillation and evaporation, are more suited for separating liquid mixtures or separating components based on their boiling points and may not be effective for separating solids from gases. Screening is more commonly used with solids to separate different sizes rather than separating solids from gases.