Option C contains a run-on sentence (I would call it a comma splice).
A better way to phrase the sentence could be:
1. A giant clam grows huge; it can weigh hundreds of pounds.
2. A giant clam grows huge. It can weigh hundreds of pounds.
We can work through the answers. Option A is not correct because the author does not say that there is plenty of food, he points out that plenty of food can be obtained, however the producers do not make enough money and therefore they just leave it. Option B is not correct because there is no parallelism in the excerpt. The sentences with <em>There is </em>do not have a grammatical relevance with each-other. The option D is not correct because the excerpt shows author's anger stemming from the irresponsibility of people. Therefore, the correct answer is C.
Can you provide what the answer choices are? It's a bit hard to answer when we don't have anything to choose from. :)
Wonderful
Mark Brainliest please!! Trying to level up