Read this example: Animal testing, though technically legal in the United States, is cruel and extremely harmful to animals and should be stopped because many animals are left in pain and brutally murdered all for the sake of medicine and vaccines for humans.

How can you revise this sentence to make it less confusing for the reader?

A. Break it up into smaller sentences.

B. Focus the more positive topics.

C. Fix the errors in grammar and spelling.

D. Add additional evidence to the sentence.