What type of eggs do Blue-spotted Salamanders lay?

Blue-spotted Salamanders lay single gelatinous eggs, which can often be found in clusters or masses in aquatic habitats. The egg masses are typically surrounded by a jelly-like substance, providing some protection and hydration for the developing embryos. This characteristic of having gelatinous eggs is crucial for their survival, as it supports the eggs in moist environments and helps maintain suitable conditions for embryonic development.

The other options, such as dry eggs or leathery eggs, do not apply to Blue-spotted Salamanders' reproductive strategy. These salamanders require moist environments for their eggs to thrive, and their gelatinous eggs are specifically adapted to ensure that the embryos have the necessary moisture and protection as they develop in water. Thus, the choice highlighting single gelatinous eggs accurately reflects the reproductive biology of the species.