C I know because it needs more money I hope this helps
The answer is:
A diagram with each part of the bicycle labeled.
Due to the fact that the text deals with a technical procedure such as changing the chain of a bicycle, the writer should reinforce the information including a graphical representation of the different bicycle parts. As a consequence, readers would be provided with a pictorial aid to understand the text better.
I would say that you should anticipate the effect your message will have on the receiver and analyze the bad-news situation.
You have to see what the best way is for you to tell someone the bad news without disrupting them too much. Also, you need to anticipate what the receiver will act like upon hearing/reading your message because you might want to change your message a bit.