This is True. If you are referring to an author about whom you had previously written in the paragraph, you are allowed to omit the name from the parentheses.
Explanation:
students should practice the habit of reading books textbooks and other books that will help and improve his or her vocabulary so that the students might and the right English vocabulary for the rights sa and the right story and a
The correct answer C, not all language relies on identical symbols.
That would be C, a prepositional phrase.