Here is the passage again:
Erin cannot tolerate tight and restrictive clothing. Because, she claims,
she had been wrapped too tightly as a mummy in her previous Egyptian life.
You chose to use Punctuation Rule 1 to fix the problem:
Main clause + Ø + subordinate clause.
The correction looks like this:
Erin cannot tolerate tight and restrictive clothing
because, she claims, she had been wrapped too tightly as a mummy
in her previous Egyptian life.
Well done! You deserve those cyber tacos!