What strategy involves replacing sensitive data with opaque values, usually with a means of mapping it back to the original value? 

Answer options:

A. Masking
B. Anonymization
C. Tokenization
D. Obfuscation

C

Tokenization is the practice of utilizing a random and opaque "token" value in data to replace what otherwise would be a sensitive or protected data object. The token value is usually generated by the application with a means to map it back to the actual real value, and then the token value is placed in the data set with the same formatting and requirements of the actual real value so that the application can continue to function without different modifications or code changes.