Question

what is islamic (sharia) law?
international trade regulations
a civil code written by parliament
a set of religious laws based on the quran and islamic teachings
unwritten local customs only

Explanation:

Islamic (Sharia) law is defined as a set of religious laws derived from the Quran and Islamic teachings. The other options: "International trade regulations" is about trade rules, "A civil code written by parliament" refers to civil law from legislative bodies, and "Unwritten local customs only" describes customary law, not Sharia.

Answer:

A set of religious laws based on the Quran and Islamic teachings