Which of the following states of matter has particles that are tightly packed with no movement?

In a solid state of matter, the particles are closely packed together in a fixed arrangement, which gives solids a definite shape and volume. The particles vibrate around fixed positions but do not have enough energy to overcome the attractive forces holding them in place. This results in the characteristic rigidity and incompressibility of solids.

In contrast, gases have widely spaced particles that move freely, liquids have particles that are still close together but can flow and take the shape of their container, and plasma consists of ionized particles that are charged and exhibit high energy and movement. Hence, the unique attributes of solids make them the correct answer for this scenario.