Final answer:
The President could effectively communicate to set the agenda for his administration by clearly outlining his goals for the year in the annual State of the Union Address.
Step-by-step explanation:
The most likely way the President could effectively communicate to set the agenda for his administration is by clearly outlining his goals for the year in the annual State of the Union Address. This speech is a key opportunity for the President to address Congress and the public, and to highlight policy priorities and legislative goals. The State of the Union Address allows the President to directly communicate his agenda and influence lawmakers to support his initiatives.