Answer :
Final answer:
A trial balloon leak is a specific type of leak where the source reveals that some major policy is being considered. It is used to gauge public reaction before making a final decision.
Explanation:
A specific type of leak, in which the source reveals that some major policy is being considered, is referred to as a Trial balloon leak. This term is often used to describe a deliberate release of information by a government or organization to gauge public reaction before making a final decision. An example of a trial balloon leak is when a government intentionally leaks information about a proposed policy change to the media to test public opinion.