Answer: Lightning and a fluorescent light bulb items contain plasma.
Step-by-step explanation:
Plasma is defined as a state of matter which contains hot ionized gas having positively charged ions and negatively charged electrons.
For example, lightening and a fluorescent light bulb has plasma as the state of matter.
On the other hand, gelatin is a solid at room temperature as its molecules are closely packed to each other forming a fixed shape with fixed volume.
Lava is a molten rock which is actually present in liquid state.
Therefore, we can conclude that out of the given options both lightning and a fluorescent light bulb items contain plasma.