Which built-in .NET cryptography algorithm is the most secure?

Question

Which cryptography algorithm is the most secure that ships with .net?

Answer 1

I'm somewhat partial to SHA-512. If 512 is a little excessive, the other members of the SHA-2 family might be helpful - SHA-256 and SHA-384 are both in the SHA-2 family. But AviewAnew's suggestion of AES 256 is good as well.