Question

what is distillation? the separation of substances by centrifuge the combination of substances by cooling the separation of substances by boiling point the combination of substances by mixing

Explanation:

Distillation is a process in chemistry. It separates substances based on differences in their boiling points. Substances with lower boiling points vaporize first and are then condensed back to liquid. The option "the separation of substances by boiling point" correctly describes distillation. The other options are incorrect: separation by centrifuge is a different technique (not distillation), combination by cooling and mixing are not distillation processes.

Answer:

the separation of substances by boiling point