The subordinate clause is "unprotected animals got swept out" and the main clause is because "when waves rush in". hope u get it right ;)
Answer:
Explanation:
The main idea for the first paragraph is B.There were too many movies,so my friends and I couldn't decide.
The main idea for the second paragraph is A.Building a pond is a noisy job.
The main idea of the third paragraph is C.Traditional Chinese medicine.
It depends if you mean the proverbial parable from the Bible it would be know but if you mean like a story to teach a lesson then yes but most likely yes :) XD
The answer will be channel.