I'm not clear on the last bit from the sentence, "which one particular could be the best". I thought it is comparable on the clause in "I'm going to protect whatever they are", the order of item along with the verb is reversed (I forgot just what the grammatical phrase https://best-litter-brands00998.blazingblog.com/37366212/the-fact-about-best-litter-brands-that-no-one-is-suggesting