Based on this description the mood that has been set by the staging is B. Sinister
Assuming that you're referring to the writing 'negore the coward' by Jack London
There are several things that support that claim. Such as :
- Kinoos is not afraid to face the Russian despite his disabilities
- He always speak up his mind and speak up if he notice any kind of injustice
hope this helps
I believe this is true, because addressing the reader's name is sort of informal and not suitable in a cover letter.