Need plz which sentence uses the most appropriate tone for a letter to a local authority complaining about poorly maintained street lights?
a. i am writing to tell you about the many problems that i and other people have been facing.
b. this is only one instance of the many problems affecting the neighborhood.
c. i would appreciate it if you could ensure us that the lights will function properly.
d. i wish you could go through what i have been going through for the past few weeks.