In the function =COUNTA(FirstName), FirstName is an example of a(n) ________ range

________ is a method for minimizing exposure of individual information while enabling continuous analysis of potentially interconnected data.

A. Immutable audit B. Selective revelation C. Associative memory D. Anonymization

A _________ is formed by taking the message digest of the content to be signed and then encrypting that with the private key of the signer.

Fill in the blank(s) with the appropriate word(s).