I need the strategy to attempt the question in a timed situation.
It would have been disingenuous of the candidate to appear_____when her opponent won the election, but she congratulated the victor nonetheless.
(A) gracious
(B) ecstatic
© crestfallen
(D) indifferent
(E) euphoric
(F) disgruntled
The two pairs will be (B,E) and (C,F)
Now, the question can be restated as:
It would be lying if the candidate appeared __________ when her opponent won the election.
So the answer should be happy.
Therefore, ecstatic and euphoric.
C and F aren’t synonyms - “crestfallen” means sad, and “disgruntled” means annoyed.
So, you only have one option here 
I did not get this one, so after looking at the options, I was confused between B and C.
I will mark C because “cruel” is a very strong word.
Can you please tell the answer?
C is the right option. Option B is wrong because of effortlessness.
Virtue -> antonym -> wicked
Lack the energy -> synonym -> indolence (laziness)
“Effortless” does not match with any other words or phrases in the passage, while “indolence” does.
