The best way to rewrite the underlined part of the sentence is:
D: "one’s natural ability to comprehend difficult concepts quickly and to analyse them clearly and incisively."
This option maintains parallel structure, uses appropriate terms, and eliminates redundancy while conveying the intended meaning clearly.
The correct option is (D): one's natural ability to comprehend difficult concepts quickly and to analyse them clearly and incisively
.Fill in the blank with the correct option.
The teacher believed that the student’s sudden lack of interest in class was an ..........., as he had always been enthusiastic and attentive.