(1) pennsylvania supported the union effort during the civil war. (2) pennsylvania shielded northeastern states when the south tried to advance through the shenandoah valley, a natural highway leading from virginia to the north. (3) pennsylvanians also fought for the union. (4) pennsylvania had a reserve corps whose fifteen regiments joined the army of the potomac to aid the union. which is the most effective way to vary the sentence patterns in the passage?

A). Begin the sentence with different parts of speech.

Explanation:

As per the question, the most effective way to vary the sentence patterns in the passage is to 'begin each sentence with a different parts of speech'(noun, pronoun, conjunction, etc.)instead of constantly repeating the noun 'Pennsylvania' that makes it sound monotonous as it would enhance the readability and comprehensiveness of the sentence along with its meaning.  

Parts of speech would assign the words(beginning words as per the question) based on the meaning and grammar of the sentence. It would not only function to vary the sentence patterns but make it more effective and comprehensive. Thus, option A is the correct answer.

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