Which is a run-on sentence? 1. I went to the store it was open.
2. I went to the store, and I quickly noticed it was open.
3. Before I went to the store I checked to see if it was open.
4. I went to the store; it was closed.

3.

Explanation:

think it's 3? for the run on sentence

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3. Before I went to the store I checked to see if it was open

Explanation:

A run-on sentence occurs when two or more independent clauses (also known as complete sentences) are connected improperly.

The best way to find a run-on sentence is to determine whether there is more than one independent clause in the same sentence without punctuation. If there are two subjects (who or what the sentence is about) or a subject and its pronoun (he, she, it, they etc.)

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consonance, it has the repetition of the consonants in stressed syllables with different vowel sounds.