The <em>older violins</em> are more than one object, in this case its cannot be used, only their; <em>each violinist</em> could mean male or female, so it would be possible the use of his or her or their (applied for either),but there is only the latter option. The correct answer is their/their.
<em>The older violins no longer had their original parts, but each violinist played their instrument well.</em>
Well, despite the fact that you haven't provided me with sentence 8 for review, I can -- fortunately for you -- say that option B MUST be the correct answer ... based solely on pure logic and a strong command of English.
Answer:
frivolous means not having a purpose or value (btw that is the google def)
Explanation:
try to see if you can find the answer inside that sentence; look at the words or the action you see in your head once you read it then respond
