Answer: when you think something is a liking verb, putting in the word 'is' in for it. if the sentence doesn't make sense, then its not a linking verb. if it does, it probably is a linking verb.
Explanation:
A part of speech that describes a noun or pronoun.
it is usually placed just before words.
Examples: Shy Child, Blue Notebook, rotten apple, etc.
Most likely because it appeals to the credibility of the author.
B. To show the importance of perseverance. due to learning guitar being a hard task and an extremely complicated one.
Hope this helps!
B is the correct answer. Hope that helped. If you don't understand why PM me and i can explain :)