Answer:
B. Content filter
Step-by-step explanation:
Content filter -
In computer , the function of the content filter is to filter out the some specific content of the network .
Content filter is a set of program to hide certain contents in the computer.
This is used to block certain offensive , illegal sites from children.
This method is often used in an organisation , in order to maintain some data confidential from the other workers.
Hence, from the given scenario of the question,
The correct term is content filter.