What is the name of the 5th element on the periodic table that has no known biological role because it has a half-life of only 22 minutes?

Correct option is D

 The correct answer is (d) Francium.
Francium is the 5th element on the periodic table that has no known biological role, primarily because of its extremely short half-life of only about 22 minutes. Francium is highly radioactive and is one of the least stable elements at or near room temperature. This instability and rarity make it one of the least studied and least occurring naturally elements, thus having no significant biological role or practical applications due to its rapid decay.