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>
The usual broken home ordeal happens a lot in poverty stricken homes, also the fact that the family most likely doesn't have the money to afford college. So that means a lot of the time children in poverty get shortened education periods. <span />