How should I punctuate the sentence Oh no basement is full of soapsuds my youngest sister sheila yelled?

Here are a few ways to punctuate the sentence, each conveying a slightly different emphasis:

Option 1 (Standard):

"Oh no! The basement is full of soapsuds!" my youngest sister, Sheila, yelled.

Option 2 (Emphasis on Sheila's yelling):

"Oh no! The basement is full of soapsuds," my youngest sister Sheila yelled.

Option 3 (Emphasis on the problem):

"Oh no! The basement is full of soapsuds. My youngest sister, Sheila, yelled."

Explanation:

* Option 1 is the most standard way to punctuate the sentence. It uses exclamation marks for emphasis and separates the phrase "my youngest sister, Sheila" with commas.

* Option 2 uses a comma instead of a period to emphasize the exclamation "Oh no!" and Sheila's yelling.

* Option 3 separates the sentence with a period, creating a pause that emphasizes the problem before revealing who yelled it.

The best option depends on what you want to emphasize in the sentence.