Which one of the following is not a 'Primary Source' of Muslim Law?

Correct option is C

Takhleed refers to adherence to the opinions of earlier Islamic scholars rather than being a primary source of law. The primary sources of Muslim Law are the Qur'an, Sunnat (Hadith), and Qiyas (analogy). Takhleed, although important in Islamic jurisprudence, is considered secondary and not a direct source of Muslim law.