If a reader wants to evaluate a text, which is the best question to ask while reading it?

a. when did the author of this text decide on this goals, and when did he write it?
b. where else is there a text with similar goals that used different elements?
c. how long is this text, and how quickly does it get to the point?
d. what are the goals of the text, and what elements achieve those goals?

The option is (D).

It is obvious the first question would be what is the text about,what does the author try to convey and how does he presents the facts to manage his goals.

If a reader wants to evaluate a text, which is the best question to ask while reading it?

D. What are the goals of the text, and what elements help achieve those goals?

Asking what the goals of texts are and the surrounding elements that help to achieve them is the best question due to it analyzes the main intention of the author's text.  

When it comes to evaluating a text, its goals and elements are the main tools to consider since they construct, develop and reveal the author's core message.

the flighty purpose never is o'ertook / unless the deed go with it"

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