Explanation:

- Article 21: This article states that "no person shall be deprived of his life or personal liberty except according to procedure established by law." It's a fundamental right and ensures the protection of life and personal liberty.

- Article 19: It provides citizens with certain freedoms, such as freedom of speech, assembly, and association, among others. It does not pertain to the deprivation of life or property.

- Article 22: This article deals with protection against arrest and detention in certain cases, ensuring rights of individuals during detention.

- Article 20: It ensures protection in respect of conviction for offences, including protection against double jeopardy and self-incrimination.

Correct Answer: Article 21