This does raise the possibility of early left ventricular failure, however there is no pulmonary edema and no acute infiltrates.

A. fragment
B. run-on
C. comma splice
D. complete sentence

No one will answer all these for you. If you indicate what YOU THINK, though, someone might be able to check your answers for you.

The given statement "This does raise the possibility of early left ventricular failure, however there is no pulmonary edema and no acute infiltrates." is a fragment.

To determine if a sentence is a fragment, run-on, comma splice, or a complete sentence, it's important to understand the definition of each.

A fragment is an incomplete sentence that does not express a complete thought. It is lacking either a subject, a verb, or both, and cannot stand on its own as a complete sentence.

A run-on sentence is formed when two or more independent clauses are joined without appropriate punctuation or conjunctions. It is a single sentence that could be separated into multiple complete sentences.

A comma splice occurs when two independent clauses are joined only by a comma, without the use of a coordinating conjunction or proper punctuation.

A complete sentence expresses a complete thought and contains both a subject and a verb. It can stand on its own as a grammatically correct sentence.

In the given statement, "This does raise the possibility of early left ventricular failure" can be considered a complete sentence as it has a subject ("This") and a verb ("does raise"). However, the fragment occurs after the comma, "however there is no pulmonary edema and no acute infiltrates." This portion lacks a subject and a verb, making it an incomplete thought and rendering the statement a fragment.

Therefore, the correct answer is A. fragment.