When the boys start to boo louder, they dismiss the power of the conch, effectively symbolizing their dismissal of a civil society. "The rock struck Piggy a glancing blow from chin to knee; the conch exploded into a thousand white fragments and ceased to exist." (Golding 181) This quote describes Piggy's death.
The correct answer is that it is a dependent clause.
A dependent clause, as the name itself says, depends on a larger clause in order to make sense. As you can see in the example above, that clause is incomplete - it needs to be part of a larger, independent clause in order to get a proper meaning. The other options are all complete sentences, which is something the example is definitely not.
I think the answer would be B
New York City is probably one of the largest city’s in the USA. Turtles can be found everywhere so maybe the turtles in New York had gotten infested all over the place.
The first one. As silent as death.