Final answer:
Solids have a definite shape and volume with particles closely packed together and fixed in place.
Step-by-step explanation:
The correct answer is a) Solid, Definite, Definite, Fixed.
In the solid state of matter, the shape is definite, meaning it has a fixed shape. The volume is also definite, meaning it has a fixed volume. The particle arrangement is fixed, meaning the particles are closely packed together and fixed in place.
An example of a solid is a desk, which has a fixed shape and volume and its particles are closely packed together and fixed in place.