Final answer:
The correct answer is option A, NO CHANGE.
Step-by-step explanation:
The correct answer is option A, NO CHANGE. The sentence is already the grammatically correct as it is written. The phrase 'Nonetheless, you may choose to think of HIM AS ANGRY RED-FACED, OVER losing his position' is a complete and clear sentence. The subject of the question is English, and the question is suitable for high school level students.