Explanation:

Correct Option: 3 - Article 14

• Section 13(1) and Section 18(1) of the relevant law were held violative of Article 14 of the Constitution by the Madras High Court.
• Article 14 guarantees the right to equality and prohibits discrimination. It ensures that all individuals are treated equally before the law and that no law can create unreasonable discrimination between different groups or individuals.
• These sections were considered to violate the principle of equality by conferring certain powers in a manner that could lead to arbitrary action. Therefore, the court ruled that they were unconstitutional under Article 14.