Answer:
Adam's state of consciousness best illustrates the concept of automatic processing.
Explanation:
Automatic processing refers to a process that does not require our full atention when being performed. An individual is not required to put much effort into the task to achieve it successfully, this is why it is called "automatic" as opposed to "controlled" processes, which need our full attention because they are normally novel or recently-learned tasks.
In this case, Adam can easily concentrate in the lecture and message his friend because it has become an automatic process, that is, he doesn't have to pay much attention to either tasks to perform them with success. He is able to perform two tasks simultaneously because they are known or common tasks for him.
