Final answer:
The three states of matter are solid, liquid, and gas. Solids have a fixed shape and volume, liquids have a definite volume and take the shape of their container, and gases fill their container fully.
Step-by-step explanation:
The three states of water, which are also the common states of matter, are solid, liquid, and gas. Solids, like ice, have both a definite shape and volume. Liquids, such as water, have a definite volume but take the shape of the container they are in. Gases, for example water vapor, have neither a definite shape nor a definite volume, expanding to fill the container. Additionally, there is a fourth state known as plasma, but it is not one of the three primary states being asked about in this question.
The correct answer to the question "What are the 3 states of water (or any matter)?" is A) Solid, liquid, gas.