The image of the watermelon in paragraph 4 ("Continents ... remembered") serves to emphasize that
Augustine
А
envies his coworkers for their
accomplishments.
B
is a rash and impulsive person.
с
wants to impose order on the universe.
D
feels overwhelmed by the mysteries of
the natural world.

C

Explanation:

He used a metaphor for the feeling he wants to arrange order.

imparadis't in one anothers arms  

the happier eden, shall enjoy their fill  

of bliss on bliss, while i to hell am thrust,  

where neither joy nor love, but fierce desire,  

among our other torments not the least,  

still unfulfill'd with pain of longing pines;  

yet let me not forget what i have gain'd  

from their own mouths; all is not theirs it seems:  

one fatal tree there stands of knowledge call'd,  

forbidden them to taste: knowledge forbidd'n?  

suspicious, reasonless. why should their lord  

envie them that? can it be sin to know,

a, overstatement is the answer