Identify the sentence that shows a cause and effect relationship.

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1 point
For the best results, be sure to complete the entire project.
Some plants grow best in the spring, while others blossom in the summer.
As soon as I completed all of my work, I began playing video games.
Since I lost my wallet, I was unable to pay for my gum at the checkout.

Since I lost my wallet, I was unable to pay for my gum at the checkout.