Using hashes ensures which of the following?

 Using hashes ensures which of the following?

Unmodification to a file

That resources are available whenever an authorized user needs them.

That a person cannot deny the authenticity of their signature on documents or messages they send.

That information is available only to the people authorized to access it.

Good work!

A hash can be used to ensure the accuracy, or integrity, of information in a file, by verifying that a file is unmodified. If the file has been modified then the hash will be unmatching.