The ancient philosopher's writings, though often dense and ______, contained profound insights that resonated through centuries. Which pair of words, when inserted into the blank, best completes the sentence to produce two sentences alike in meaning?
✓ Correct Answer: Option B
The writings are described as 'dense' but contain 'profound insights,' suggesting they are difficult for the average person to understand. 'Recondite' and 'esoteric' both mean obscure and difficult to comprehend.