Answer: Option (b) is the correct answer.
Step-by-step explanation:
Plasma is defined as a state of matter which is a hot ionized gas with positively charged ions and negatively charged electrons.
For example, the hydrogen and helium atoms present inside the Sun exist in plasma state.
This is because inside the Sun nuclear reactions take place due to which the gases are present in hot ionized form and they travel rapidly from one place to another.
Thus, we can conclude that radiant Sun is an example of a plasma that occurs in nature.