I'm studying for the SAT and ran into this issue on a practice test. My prepbook says that commas shouldn't be used between an independent and dependent clause in that order. To me "creating..." constitutes a dependent clause. This is more apparent when the gerumd creating is replaced with to create. I'm not understanding why the correct answer choice (which I agree is the best answer) uses a comma before creating. This is not an official test from college board so a typo/error is possible in the answer choice. I simply want to know if this is the case. I'm also curious to whether the phrase "creating a landscape" would be a gerund or participle phrase in this sense.

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    Please could you type out the relevant sections from the images? Aug 7, 2019 at 6:33

1 Answer 1


"Creating..." isn't a dependent clause. It's a participle phrase that modifies either the entire preceding clause, the subject-verb in the preceding clause, or a noun that precedes "landforms" in the preceding clause. The base participle phrase is "creating a landscape." You'll notice that's not a clause because there's no subject-verb. Rather, it is the present participle "creating" and its direct object "a landscape," the complete direct object being "a landscape that not only serves..." because "landscape" is adjectivally modified by the restrictive relative clause "that not only serves..."

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    Clauses don't necvessarily have to have a subject, though. Jul 13, 2018 at 0:38
  • A clause is a group of words that has a subject and a predicate, but in my Merriam Webster's definition, the group of words must also function as part of a complex or compound sentence. Then a simple sentence is not a clause?
    – Zan700
    Jul 13, 2018 at 1:30

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