I believe the answer would be b
Guessing at what word the question is asking about here. I'd say B - obstinacy means being stubborn or inflexible, which doesn't apply here.
I think the best answer will be c because everyone knows how he spends time
Tone is the attitude of the author towards the audience, and mood is the attitude of the author towards the subject.
Please make brainliest answer, I need one more <3
The tone is important in all writing it conveys the authors attitude towards the topic.