Explanation:
Hey there!
Your required answer is option A.
The reason is, Pure substances will always be elements or compounds.
- Compounds are the pure substance made up of elements in a fixed proportion.
- Elements are the pure substance made up of only one kind of atom.
And, Mixture are mainly of two type,
- Heterogeneous mixture : Which easily defined as the type of mixtures which can be seen through our naked eye.
- Homogeneous mixtures: The type of mixtures which can not be seen through our naked eye is called homogeneous mixtures.
Hope it helps..
