Question

Bacon lists cupid’s attributes in order to

Answer 1

Without any doubts I can say that the reason why Bacon listed cupid’s attributes is that he wanted to prove that Cupid is actually exist. So, the answer should look like this : Bacon lists cupid’s attributes in order to show that Cupid is real. 
Hope you will find this answer helpful.

Answer 2

The correct answer is “compare them to the features of the atom.”

Bacon list Cupid’s attributes in order to compare them to the features of the atom.

In his book “Of the Wisdom of the Ages” of 1857, in title XVII, “Cupid or the Atom”, Francis Bacon (1561-1626), refers to the Atom and compares Cupid’s attributes with the Atom. In one of the excerpts, it says: “Most truly, is he represented as naked: for all compounds (to one that considers them rightly) are masked and clothed; and there is nothing properly naked, except the primarily particles of things.  

The other options of the question were, a) show that Cupid is real, b) show that is a child, and c) disapprove the existence of the atom.