Explanation

The pivot word yet means that the first blank will oppose “solitary,” and the second will agree with it. While the correct answers are extremely difficult words, all of the wrong answers are pretty standard GRE vocabulary words, so you should be able to answer this one by process of elimination.

Apposed, eremitic.
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I did two mistakes here.

1. I considered that lie is the word used for cheating or perfidyish.
2. i did not know the meaning of the word apposed.. which now I know is "close proximity"

I got the second option correct by the process of elimination. however for Option A Enamored was a nice trap however It also belied the usage of word LIE in the sentence.