Sentence Structure and Punctuation: TEAS Practice Question with Answer & Explanation

Understanding Compound Sentences

A compound sentence is formed when you join two or more independent clauses. An independent clause is a group of words that contains a subject and a verb and expresses a complete thought (it could stand alone as its own sentence). On the TEAS exam, you are expected to know the specific punctuation and conjunction rules required to connect these clauses legally.

Why the Correct Answer is Correct

Choice B is correct because it uses a semicolon (;). A semicolon is one of the most effective ways to join two closely related independent clauses without using a coordinating conjunction. It tells the reader that the two thoughts are distinct but have a logical connection (in this case, cause and effect).

Analysis of Incorrect Options

• Choice A is a comma splice. You cannot join two independent clauses with only a comma. This is a very common grammatical error. To use a comma, you would also need a coordinating conjunction (FANBOYS).
• Choice C is a run-on sentence. While it uses the coordinating conjunction "and," it lacks the necessary comma before it. When joining two independent clauses with "and," "but," "or," "for," "nor," "so," or "yet," a comma must precede the conjunction.
• Choice D changes the sentence structure entirely into a complex sentence. While grammatically okay in a general sense, it lacks the proper comma after the introductory phrase ("Due to... scale,") and it no longer qualifies as a compound sentence—it has become a dependent clause followed by an independent clause.

TEAS Grammar Concept: Joining Clauses

To form a proper compound sentence on the ATI TEAS, remember these three standard methods:

1. Comma + Coordinating Conjunction: (e.g., "...scale, so her data...")
2. Semicolon: (e.g., "...scale; her data...")
3. Semicolon + Conjunctive Adverb + Comma: (e.g., "...scale; consequently, her data...")

Nursing Student Tip

In clinical charting, being concise and grammatically correct is vital for clarity. "The patient's blood pressure is rising; I have notified the attending physician" is a professional compound sentence that clearly links a clinical observation with a direct action.