A, In Fact, studies by scientists have found......
In fact followed up by an actual factually proven statement!
Answer:
heart wrenching, difficult, struggle, trial, etc.
Answer:
Get at least 9 hours of sleep every night
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Answer 4 cannot be it right off the bat, since compound-compound doesn't exist.
If a compound - complex sentence loses the dependent clause, it is no longer complex, since complex sentences require a dependent and to independent clauses conjoined with a comma and conjunction such as "and". So answer 3 can not be it.
So that leaves either simple or compound.
The sentence is still contains an independent clause from when it was compound-complex, therefore answer 2, compound, is the answer.
