Essays / First vs Third person answers [5]

Hi, I am taking a graduate level course in communications. The following was the assignment

1.Cut and paste the company's website AND its code of ethics
2. Provide a short analysis of the key aspects outlined in the code you chose.
3. Explain why you think these elements are important/relevant to this particular company or industry and
4. Explain, in your personal opinion, why abiding by this code of ethics provides "for society's greater good."

As I turned in my assignment I had points deducted for writing my answers in the first person. As the instructor pointed out, academic work is to be done in the third person.

My question is on technique for writing a "personal opinion" in the third person? How would one phrase a response to the question;

"What color do you think the sky is?" and "Why do you think it is that color?"

Any suggestions?