Answer is A is correct. Ijma means consensus of opinion, it is a majority view of the scholars. When there was no principle on any point a special effort was made by the scholars to resolve that issue by majority view. Therefore option (a) is the correct answer.

Answer is C is correct. The first source of Islamic Law is Quran which is a book of God. It is a collection of those revelations which were made to the Prophet in God’s own words containing wishes and commands. Since Quran is a word of God the legal doctrines contained in it are immutable, unchangeable and infallible according to the classical theory. Therefore option (c) is the correct answer.

Answer is A is correct. Sunnah is the practice of the Prophet and is a rule of law deducted from Ahadis on the other hand Ahadis is a narration of a particular event. Therefore option (a) is the correct answer.

Answer is B is correct. Sunnah is the second most important source of Islamic Law which comprises of the practices and precedents set by the Prophet Muhammad himself. The authority of Sunnah is derived from the text of Quran itself. Therefore option (b) is the correct answer.

Answer is D is correct. In Abdul Khadir v. Salima court held that the marriages under Muslim Law is not a sacrament but purely a civil contract. Therefore option (d) is the correct answer.