Answer:
Lukas is evaluating the author’s style.
Step-by-step explanation:
By following these steps, Lukas is evaluating the author's style. He first identifies the purpose, which is the main goal that the author wants to accomplish. Second, Lukas looks at elements of the author's style, most likely in order to get a better idea of what the author does and why he does it. Finally, he tries to determine how the author's style supports the author's purpose.