Alison retrieved data from a company database containing personal information on customers. when she looks at the ssn field, she sees values that look like this: "xxx-xx-9142." what has happened to these records?
a. encryption.
b. truncation.
c. hashing.
d. masking

The correct option to the following question is an option (D) Masking.

Explanation:

The following option is correct because Masking is the ability to apply mask on the value with the help of bitwise AND, OR and XOR,  

That's why, when Alison looks the Social Security Number then it looks different and this is the 9 digits of Social Security Number which is in three parts, the first part is for the area, the next part is for group number and last part is for the serial number.