In which situation can a mixture always be called a solution? when one of its components is a gas when there is no solvent in the mixture when its components are made up of different types of particles when the mixture is homogeneous

The best and correct answer among the choices given is the last statement. A mixture can be called as a solution when the mixture is homogeneous. When a mixture has uniform properties all throughout it is commonly referred as a solution. Solution has different substances in it but is classified into two: the solvent and the solute.