Answer:
Look below.
Explanation:
The author developed a bias in favor of climbing by exemplifying the benefits that climbing has on your mental and physical self. The author uses persuasive words such as better and hooked. The author uses something common that every one struggles with as a solution with climbing.
 
        
             
        
        
        
The topic sentence is usually the first (or sometimes the second) sentence of a paragraph. It summarizes the paragraph as well as identifies the main point.
I hope this was helpful.
        
                    
             
        
        
        
It could have been either's jacket.
        
             
        
        
        
Answer:
The definition of "tone" in literature is the way the author expresses his attitude through his writing. The tone can change very quickly or may remain the same throughout the story. Tone is expressed by your use of syntax, your point of view, your diction, and the level of formality in your writing.
Explanation: Hope it helps!! 
Sorry I accidently put it in the comments and not the answer!