Since puerile and mature are opposites the best answer is d since moribund which means inactive compared to it's opposite, lively.
The authors purpose suggested by the text is explain how to use the guitar because it's not trying to convince you to buy a guitar and it isn't teaching you about all the parts on the guitar just how to tune the strings. Hope you found this helpful!
B. Is the answer to the question
Question 1
Make inferences about the meaning based on the words around it.
Question 2
Context clues
Question 3
A hidden meaning
Question 4
Someone at a theme park
Question 5
A great number
Question 6
Majestic
Question 7
Difficult
Question 8
To be involved in a difficult situation
Question 9
Definition context clue
Question 10
Inference context clue
