If Mermaids were real would they lay eggs? Explain your reasoning.
Mermaids are hybrid animals with the upper body being human and the lower body being fish. Reproductive organs are usually located in the lower body in animals. Since the lower body in mermaids is fish-derived and most fish lay eggs, I would assume that, yes, mermaids lay eggs.  A mermaid however is a hypothetical animal which does not exist (in our world), and therefore the exact anatomy is unclear, so other modes of reproduction would be possible.
Using the same logic, what reproductive organs would a male centaur have? How about a female centaur?
Following the above logic, because Centaur has a horse's body, it should have horse reproductive organs for both male and female.