Final answer:
The major purposes of engagement communication are to inform, persuade, and get results. Assigning responsibility is not usually considered a major purpose of such communications but rather a function of management.
Step-by-step explanation:
The purpose of an engagement communication in a business context typically includes several objectives. The major purposes are to inform stakeholders about relevant issues, facts, or changes; to persuade others towards a particular viewpoint or course of action; and to get results, such as initiating new strategies, launching a product, or improving processes.
Assigning responsibility, while an important management function, is not typically considered a major purpose of engagement communications. Instead, this function falls more directly within operational management and task delegation rather than communication strategy. Engineers, like in many professions, use their communication skills broadly, such as to apply for jobs, make presentations, interact with customers, and when necessary, ask for a raise. This underlines the importance of effective communication in achieving professional and project success.