Explanation:

- Article 21: It provides protection of life and personal liberty, stating that no person shall be deprived of these except according to the procedure established by law.

- Correct Answer: Article 21

- Article 19: It relates to the protection of certain rights regarding freedom of speech, movement, and trade within India.

- Article 24: It prohibits the employment of children below the age of 14 in factories and hazardous jobs.

- Article 27: It prohibits the imposition of taxes for promoting or maintaining any particular religion.