What is the answer for number 3

How would you write "the fourth of july? " the 4th of july or the fourth of july? are they both grammatically correct?

On one of his many outings through the brobdingnagian countryside, gulliver walks on a small path through a field. during this walk on the small path, how does gulliver get dirty? a. the dwarf throws at gulliver, b. the queen of brobdingnagian steps on gulliver, c. gulliver gets caught in a rainstorm, and d. gulliver falls in cow dung.

There is nothing miniscule about our --let alone our universe.