The correct answer is option 1, Article 19.

Option 1, Article 19 grants certain fundamental rights to all citizens of India. These rights include the freedom of speech and expression, the freedom to assemble peacefully, the freedom to form associations or unions, the freedom to move freely throughout the country, the freedom to reside and settle in any part of India, and the freedom to practice any profession, occupation, trade or business. These rights are available exclusively to Indian citizens and are not extended to non-citizens.

Option 2, Article 20 protects individuals from being punished for acts that were not considered a crime at the time they were committed, an aspect of the legal principle known as "double jeopardy." This right is available to all persons, regardless of their citizenship.

Option 3, Article 21 guarantees the right to life and personal liberty to all persons, regardless of their citizenship. Similarly, option 4, Article 22 provides protection against arbitrary arrest and detention and applies to all persons, regardless of their citizenship.

Therefore, the correct answer is option 1 - Article 19, which provides fundamental rights exclusively to citizens of India.