Which of the following migrates to freshwater to lay eggs?

Petromyzon  (Lampreys) are anadromous, meaning they live in the ocean as adults but migrate to freshwater rivers and streams to spawn and lay their eggs. After hatching from eggs laid in freshwater, lamprey larvae (ammocoetes) live in the sediment and filter-feed until they metamorphose and migrate to the ocean.

Labeo is freshwater fish and typically do not migrate to lay eggs. 

Hagfish (Myxine) is bottom-dwelling marine fish that typically inhabit deep waters. It does not migrate.

Scoliodon (Dog fish) is marine sharks and do not migrate to freshwater to lay eggs.