Final answer:
Different methods were used to protect temples from rainwater, such as roofs or roof-like structures, underground tunnels, and low wooden roofs covered in tile.
Step-by-step explanation:
The element added to the temple to deal with rain was a roof or a roof-like structure. In different architectural styles and time periods, different methods were used to protect the temple from rainwater.
For example, in Greek temples, the inner chamber was typically built directly on the platform, but in some cases, like at Didyma, the architects created underground tunnels to preserve a sacred spring while still maintaining the appearance of a fully roofed temple. In Etruscan temples, low wooden roofs covered in tile provided some protection from the elements.