Final answer:
A "blast" communication tool is a method used to distribute information quickly to many associates, often via mass email or messaging systems.
Step-by-step explanation:
The term "blast" communication tool refers to a method used by businesses and organizations to quickly disseminate information to a large group of associates or employees. This is typically done using mass communication channels such as email, messaging services, or internal communication platforms where a single message can be sent to all relevant parties at once. The correct answer to what is a "blast" communication tool used to quickly communicate with associates is not explicitly listed among the multiple-choice options provided, but it encompasses elements of corporate communication strategy and technology.