In which of the following does external fertilization take place?

External fertilization takes place in amphibians, such as toads. External fertilization is a method of reproduction where the sperm and egg cells are fertilized outside of the female's body. This is different from internal fertilization, where the sperm and egg are fertilized inside the female's body. In the case of toads, the male will release his sperm into the water and the female will release her eggs, where they will meet and fertilize outside of the body. Other species, like birds, lizards, and cockroaches, typically have internal fertilization.