The answer is A) gradualism.
Answer:
Dear, (whom you are writing to)
I wish to complain about ____ (name of product or service, with serial number or account number) that I purchased on ____ (date and location of transaction). I am complaining because ____ (the reason you are dissatisfied). To resolve this problem I would like you to ____ (what you want the business to do).
Explanation:
Hope this is helpful.
Agreed because the other ones wouldn't make sense
me who else is ready cuz i am: