Answer is D is correct. Article 23 prohibits traffic in human beings, begaar and forced labour and does not talk about compulsory service for public purposes. Therefore option (d) is the correct answer.

Answer is A is correct. As per Article 25(1) state can put reasonable restrictions on the ground of health, morality and public order and so in the given facts on the basis of health ban is valid. Therefore option (a) is the correct answer.

Answer is A is correct. In case of John Vallamattom v. Union of India, the Supreme Court held that Section 118 of the Indian Succession Act is violative of the Article 25 and 26 of the Constitution. The case at hand harmonized the subject matter of the Indian Succession Act concerning Christian practices in India. While stating the impugned rule as manifest arbitrary legislation, the court also restated the threshold for integral practices, adding to the compendium of precedents on the issue. The result was a striking down of the impugned rule as a violation of Article 14 fundamental rights. Therefore option (a) is the correct answer.

Answer is A is correct. This does not violate Article 25 of the Constitution as clause (2) states nothing in this article shall affect the operation of any existing law or prevent the State from making any law, (a) for regulating or restricting any economic, financial, political or other secular activity which may be associated with religious practice. Therefore option (a) is the correct answer.

Answer is D is correct. Right to freedom of religion can be restricted on the ground of health, morality and public order as per Article 25(1) and not on the ground of security of the state. Therefore option (d) is the correct answer.