Which sentence is a run-on?

Group of answer choices

Mrs. Neely enjoys working in her garden filled with colorful plants and flowers.

All of the houses on our block have spacious yards with large evergreen trees.

Mr. McBride checked the local weather forecast before he set sail for the day.

The video game uses new technology it makes the setting more realistic.

Run-on sentences, also known as fused sentences, occur when two complete sentences are squashed together without using a coordinating conjunction or proper punctuation, such as a period or a semicolon.

Unless you have typos, the last two seem to be choices.

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The sentence "The video game uses new technology it makes the setting more realistic." is a run-on sentence because it contains two independent clauses ("The video game uses new technology" and "it makes the setting more realistic") that are not properly connected.