Answer:
The big dog ferociously barked at the cat trembling with fear
' C ' has the misplaced modifier. It makes the sentence sound like the commands take the obedience class.
It should say "The dogs that take the obedience class know several commands.".
In this excerpt from Gray's <span><em>Elegy Written in a Country Churchyard, </em>the speaker points out at the sadness behind the gem that never gets taken out of its cave and the flower that blooms without a witness. The poem points out, through his regret, what the speaker considers the full potential of these things to be.
Therefore, your best answer is Gems, flowers and talents can be appreciated only when they're seen.</span>