While the Sharia law is exclusively on the foundations of religion, all social norms stem from religious principles; for the emirate law, it can be said that the law of the kingdom, which means emirate in translation, does not have to conditionally imply the sign of a religious, although it is often the case. The tribal law implies tribal hirearchy and often unwritten laws of tradition, in some cases, may even be more liberal than religious law. What is a non-religious law established by the nation to provide order is a civil law, known in democratically developed societies, with a developed awareness of the importance of secularism, tolerance and the consensual relationship between government and people.
The answer is: a.
