What is the most logical inference from the above passage?

Correct Option: (b) Religious freedom under the Constitution is open to State intervention.

The passage explains that Article 25, which guarantees freedom of conscience and religion, is explicitly prefixed with the words 'subject to public order, morality, health and to the other provisions of this Part'. It notes that these closing words of the prefatory rider subordinate the right to religious freedom to other fundamental rights in Part III, such as the right to equality before law and equal protection of laws (ensuring the State shall not deny equal protection on the basis of religion alone). This means that religious freedom is not absolute and is open to State regulation and intervention in the interest of public order, morality, health, and other fundamental rights. Therefore, option (b) is the most logical inference. Options (a), (c), and (d) contradict the constitutional provisions and the arguments made in the passage.