OEThe word
“Despite” at the beginning of the sentence indicates that the blank must oppose the encouragement of a con artist (someone who tricks people out of money)—that is, the
“mark” is doubtful about the con artist’s claims. (A mark is someone who is a target of a criminal or con artist.) “Skeptical” and “leery” match this meaning.
“Optimistic” and
“enthused” create a pair, but do not fit the required meaning of the sentence. And the remaining words neither fit the intended meaning of the sentence nor form a pair:
“irascible” means easily angered, while
“jaundiced” most commonly means yellow in complexion (from the medical condition) but can also mean bitter or envious.
Answer: D,F