Question 12 - Reading Practice Test for the TOEFL Test

Where must participants submit their entry forms, according to the passage provided?

The annual school science fair is back! Get ready for a day of exploration, experiments, and amazing inventions. Come learn all about the wonders of science!
To enroll, all entry forms must be submitted to the main office.
Family members are welcome to join students for snacks, drinks, and activities after the fair!