Here is the passage again:
Whenever Delores makes her infamous rubbery meatballs. David sneaks them
off his plate and into the willing mouth of Jellybean, the family's terrier.
You chose to use Punctuation Rule 2 to fix the problem:
Subordinate clause + , + main clause.
The correction looks like this:
Whenever Delores makes her infamous rubbery meatballs,
David sneaks them off his plate and into the willing mouth of Jellybean,
the family's terrier.
Nice work! You deserve those cyber fries!