Identifying Rhetorical Strategies in Argument

Read the following excerpt and consider the author's use of rhetorical strategies:

"In this era of information overload, our attention is something we must defend vigorously. We are bombarded with messages from every direction, each vying for a moment of our time. As we navigate our daily lives, it is crucial to be selective, focusing on the voices that resonate with our truth, rather than surrendering to noise that detracts from our purpose."

Which rhetorical strategy is primarily employed in this excerpt to enhance the author's argument?