parliament enacted a law which says illegal conversions are in derogation of the fundamental rights ...........

Legal Reasoning Others

Freedom of conscience and free profession, practice and propagation of religion.
(1) provisions of this Part, all persons are equally entitled to freedom of conscience and the right freely to profess, practise and propagate religion.
(2) Nothing in this article shall affect the operation of any existing law or prevent the State from making any law:
(a) regulating or restricting any economic, financial, political or other secular activity which may be associated with religious practice;
(b) providing for social welfare and reform or the throwing open of Hindu religious institutions of a public character to all classes and sections of Hindus.
Explanation I.—

The wearing and carrying of kirpans shall be deemed to be included in the profession of the Sikh religion.
Explanation II.—
In sub-clause (b) of clause (2), the reference to Hindus shall be construed as including a reference to persons professing the Sikh, Jaina or Buddhist religion, and the reference to Hindu religious institutions shall be construed accordingly.

parliament enacted a law which says illegal conversions are in derogation of the fundamental rights therefore illegal. Which of the following statement justify the intention of the parliament?

Parliament is the custodian of good public life therefore under its legislative capacity to enact such laws to achieve the ideals enshrined under the constitution.

Part 3 of the constitution which provided minimal conditions to live and celebrate human existence.

India being a welfare state, such laws are necessary to lift India’s stature in the international arena.

Religion shall always pursue in freedom therefore part 3 of the constitution promises basic conditions

Explanation:

Religious freedom prevents the cultural majority, government etc from using the power of the state to impose their beliefs on others. This protects everyone—religious and nonreligious alike—from the government becoming so powerful that it can tell people what to think and how to act. Conscience is the individual's most sacred right.