Concept:Delegated legislation is law made by a body other than the legislature, using powers granted by an enabling act.
Explanation:A bye-law is made by a local government or other subordinate authority under powers delegated by Parliament.
It is a typical example of delegated legislation.
In contrast, an act is primary legislation made directly by the legislature.
A bill is only a proposed law, not yet enacted.
A decree is usually issued by the executive, especially under military rule, and is not truly delegated legislation.
Answer:D. a bye-law