Which of the following sentences should NOT include commas?

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My cake, which is covered with strawberry icing, took hours to make.
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If you like strawberry icing, you will enjoy the cake I made.
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The cake, with strawberry frosting, is the one that I made.
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My cake, which took hours to make, is covered with strawberry frosting.
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1 answer

The sentence that should NOT include commas is:

"If you like strawberry icing, you will enjoy the cake I made."

In this case, there are no non-essential clauses or phrases that require commas. The other sentences include non-essential clauses that require commas for clarity.