When examining a text for its value, it is important to

use a teacher’s or professor’s criteria for what makes a text valuable
set personal criteria for what makes a text valuable
judge the text based on syntax and diction
make sure that one’s opinion aligns with a certain school of thought

The correct answer is to judge the text based on diction and syntax.

Syntax  shows the principles, rules and processes which will govern the sentence in a certain language whereby they include word order.

Diction shows how a word or saying is being expressed to the primary or original meaning. Diction is a distinctiveness of a speech. It draws clearly for each and every word to be heard clearly and being understood.

Diction should have good speech and proper writing in order to establish the characterization and tone of passage.