Consumers may not think of household cleaning products to be hazardous substances, but many of them can be harmful to health, especially if they are used improperly.
D) A consumer may not think of household cleaning products as
E) Household cleaning products may not be thought of, by consumers, as
I am getting a bit confused about pronoun referent issue. The pronoun "them" could either refer to hazardous substances or cleaning products. I do not see a clear referent. Can you explain the concept of pronoun referent?
Thanks