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Used in many cleaning detergents and hygiene products to produce suds, a compound named Sodium Lauryl Sulfate (SLS), which was found to cause irritation of facial skin with prolonged exposure, was the subject of a famous Internet hoax in the 1990s.
This answer choice is grammatically incorrect. The modifier Used in many cleaning detergents and hygiene products to produce suds should be placed immediately before the noun it is meant to modify - a compound. However, here it is followed by found.
When two modifying clauses modify the same noun, the sentence should be structured so that both are correctly positioned next to the noun they logically modify. Instead, in this answer choice, found to cause irritation seems to modify suds.[[snippet]]
This answer choice is grammatically incorrect. It creates a parallelism of all the clauses describing a compound (which was (a) found... (b) named ... and (c) used), but these items are not logically parallel and do not belong in a list: the first is a finding about the compound, the second is its name, and the third is its function.
There is an answer choice which better organizes the relationship between these three modifiers, making the sentence more readable. Find it!
This answer choice changes the originalmeaning. The modifying clause named Sodium Lauryl Sulfate (SLS) is incorrectly placed after the noun suds, describing suds instead of describing a compound.[[snippet]]
This answer choice is grammatically incorrect. This answer choice unnecessarily adds the pronoun it to the relative clause which [it] was found to cause but the relative pronoun which already refers to a compound and serves as the subject of the clause.
In addition, this answer choice does not fit into the original sentence since it lacks a comma at the end separating the last modifying clause used in many cleaning detergents and hygiene products to produce suds from the sentence's main conjugated verb was.[[snippet]]
This answer choice correctly places the Dangling Modifier Used in many cleaning detergents [...] before the complex noun it modifies (a compound named Sodium Lauryl Sulfate (SLS)), and correctly places the relative clause which was found to
cause irritation of facial skin with prolonged exposure directly after the same noun.