Homogeneous mixtures are uniform throughout, meaning their composition is consistent. Let's analyze each option:
1. O blood - Blood is a heterogeneous mixture as it consists of various components like red blood cells, white blood cells, platelets, and plasma. These components do not mix uniformly, making blood a heterogeneous mixture.
2. O steel - Steel is an alloy made by mixing iron with carbon and other elements like chromium or nickel. This mixture is uniform throughout, making steel a homogeneous mixture.
3. O cloud - Clouds are formed by tiny water droplets or ice crystals suspended in the air. The composition of a cloud is not uniform, as it consists of water in different states (vapor, liquid, and solid), making it a heterogeneous mixture.
4. O muddy water - Muddy water is a heterogeneous mixture since it contains visible particles of mud or dirt suspended in water, leading to an uneven distribution of components.
Therefore, among the options provided, steel is the only homogeneous mixture as it has a uniform composition throughout, unlike blood, clouds, and muddy water.
