Final answer:
Without the specific context of the text from which line 10 is drawn, a definitive answer cannot be provided. However, a reoccurring theme in literature is friends being a source of joy in a somber environment, and our understanding of this leads to the selection of option D as a likely answer, which presents her friends as joy found in a sad world.
Step-by-step explanation:
The simile in line 10 of the provided text options seems to describe the role friends play during times of hardship and emotional pain. Considering all the given excerpts, the answer depends on contextualizing the simile within the poem from which the line comes. However, without a specific line 10 provided in the question, it's difficult to provide a definitive answer. That said, a common theme in literature is the juxtaposition of joy in a sorrowful setting. As such, a simile that talks about finding joy in a dark world typically aims to highlight the contrast between the bleakness of one's environment and the brightness that friends can bring into one's life.
Based on the presented literary excerpts, particularly the one mentioning that friends might not truly follow one 'to the grave', it points towards the idea that friends offer solace but have limits in their capacity to alleviate loneliness or grief. Therefore, the closest option from the ones provided would likely be D, which 'presents her friends as joy found in a sad world.' Though, this is speculative without the exact line 10 context.