Here is the item again:
To make Sylvia, the party's hostess, happy. Kelvin steeled himself,
dipped his spoon into the squid eyeball stew, and began to empty the bowl.
You chose to use Punctuation Rule 6 to fix the problem:
Infinitive Phrase + , + Main Clause.
Here is the correction:
To make Sylvia, the party's hostess, happy,
Kelvin steeled himself, dipped his spoon into the squid eyeball stew,
and began to empty the bowl.
Well done! You deserve that pizza!