Here is the passage again:
To make her ex-boyfriend Brad jealous, Georgia saved her money. To buy a
head-turning black dress that would attract a flock of men at the dance.
You chose to use Punctuation Rule 5 to fix the problem:
Main clause + Ø + infinitive phrase.
The correction looks like this:
To make her ex-boyfriend Brad jealous, Georgia saved her
money to buy a head-turning black dress
that would attract a flock of men at the dance.
Well done! You deserve those cyber donuts!