First person. The only exception is if they are talking about someone else. Or whiting about someone else
This question has to do with the correct form of present simple tense for each person. Here, you should know that this form for every person looks the same, except for third person (he, she, it) where you have to add -s. Having this in mind, these are the correct answers:
1. Many Canadian citizens who live in Montreal speak French.
2. She speaks highly of the new president of the company.
3. Grace usually sleeps longer than her sister.
4. Newborn babies sleep for 16 to 17 hours a day.
5. Jorge suffers from chronic back pain.6. People with Alzheimer's disease suffer from memory loss.
I hate to say it, but your editorial is going to sound very school newspaperish if you use 1st person.
The answer is B. An independent clause is a clause that can stand alone as a complete sentence.