Hi All,

Can anyone help me understand if the usage of the below two options is correct?

1. cleaning products to be hazardous products --> both plural (cleaning products and hazardous products). Since we are using to be, it seems correct to me.

2. household cleaning products as hazardous products --> if we are using AS, then the use of hazardous products justify the sentence and makes it correct? IMO (and I might not be correct), it should be "as hazardous product"

About your point #1, there is no pronoun ambiguity in answer D, because "consumer" is singular in D.

About your point #2, I agree with your general philosophy about passive voice: when the object of a verb is the true 'topic' of the sentence, passive voice can be preferable to active voice. But I'd suggest being very careful applying that principle to GMAT SC questions. In this question, it's perfectly reasonable to think of the consumers as the "topic" of the sentence, since the consumers are the ones facing the hazards from cleaning products. Really, as soon as a sentence uses passive voice, but also identifies the subject (in E, it says "may not be thought of, *by consumers*, ...") it's almost always going to be preferable to rephrase the sentence in an active way. It's most often true when passive voice is preferable to active voice that the subject can be omitted altogether ("Littering laws were enacted in 1850", for example, is a good passive sentence). Notice that your two example sentences aren't directly comparable to answers D and E in this question, for this very reason. To make a fair comparison, you'd need to identify the subject in both of your examples:

1. The dispatcher is notifying the police that 3 prisoners have escaped.
2. Police are being notified, *by the dispatcher*, that 3 prisoners have escaped.

and now I think your sentence #1 is preferable to your sentence #2 (though in your original versions, I prefer sentence #2).

In general on the GMAT, if you're going to pick an answer that uses a passive construction, you'll want to have a very compelling justification for making that choice, and I don't find one in this question. It's probably true that if you're ever debating between two otherwise correct answer choices, and the only difference between them is that one is active and the other passive, that you'll be right the considerable majority of the time if you pick the active answer.