The age of our solar system is about:

a. one-third of the age of the universe.
b. three-fourths of the age of the universe.
c. two billion years less than the age of the universe.

Option (A)

Explanation:

The universe is about 13.8 billion years old, which was formed right after the great big bang explosion, and since that time, it has been continuously expanding in all the direction in space. It comprises all the galaxies, including the Milky way galaxy which comprises the solar system with all its planets.

The solar system is about 5 billion years old, which is just a few million years older than the earth. The solar system is comprised of both the terrestrial and the Jovian planets.

Thus, by observing both of their age, it can be concluded that our solar system is nearly one-third of the age of the universe.

Hence, the correct answer is option (A).