Which type of mixture is formed by a solution of two liquid components?

Homogeneous mixture

The correct answer is option 1. Homogeneous mixture.

A homogeneous mixture is a uniform and evenly distributed combination of two or more substances, where the individual components are indistinguishable at a microscopic level. In the context of a solution of two liquid components, the molecules of the liquids are evenly dispersed throughout the mixture, resulting in a single-phase liquid. This means that, at a molecular level, there is a uniform distribution of the different substances, and there are no visible boundaries or separations between them.

Contrastingly, a heterogeneous mixture would be one in which the components are not uniformly distributed, and you can visually identify different regions or phases within the mixture. Suspensions and colloidal solutions are examples of heterogeneous mixtures, where particles are dispersed but not as evenly as in a homogeneous mixture.

In summary, when you have a solution with two liquid components, and the molecules of these liquids are uniformly distributed, it is considered a homogeneous mixture.