The subordinate clause is "unprotected animals got swept out" and the main clause is because "when waves rush in". hope u get it right ;)
I believe the answer to this question is the third option: worry
Here is the answer to the given question above. Caroll Spinney, who turns 83 today, is famous for voicing big bird and <span> Oscar the Grouch on </span>Sesame Street. He is an<span> American puppeteer, cartoonist, author and speaker most </span>famous<span> for playing </span>Big Bird<span> and Oscar the Grouch on </span>Sesame Street<span> since 1969. Hope this answers your question.</span>
People like the feeling of being scared because it makes it to where they cant get scared anymore is my opinion