Question 1, Part A
The best response is: He creates an encouraged tone by describing how he found joy in helping others.
This choice highlights the positive shift in tone that occurs as the speaker transitions from feeling sad and lonely to finding purpose and joy in uplifting another person's spirits.
Question 2, Part B
The lines that best support the answer to Part A are: "In trying to soothe another's woes / Mine own had passed away."
These lines exemplify the moment of transformation and illustrate how helping others alleviates his own sadness, aligning with the encouraged tone of the poem.