The correct answer to this open question is the following.
The United States presidents use these methods of communication in the following ways. I am going to include an example to persuade the public in the answer.
Method 1: Rallies.
One of the best methods of communication because the president appears in person, right there, in front of his followers, addressing them or thanking them for their support. It is a great chance to greet them and have direct interaction with them.
Method 2: Social Media.
The president can have immediate communication with the citizens or his followers through social media. No intermediaries. The president interacting with them at the right precise moment.
Method 3: Press conferences.
An excellent way to address the national media to answer questions on important issues or promote his executive agenda.
Method 4: Televised interviews.
A more direct and personal way to establish a conversation with major TV news programs.
Method 5: The State of the Union address
The official way to address Congress and the nation to inform about the situation in the United States.