While many found the ancient text _____, scholars argued its cryptic passages were not merely nonsensical but rather contained profound philosophical truths, albeit ones that required careful _____.

✓ Correct Answer: Option A

The first blank needs a word that contrasts with 'profound philosophical truths' and aligns with 'cryptic passages.' 'Obscure' fits. The second blank requires an action for understanding cryptic text, for which 'deciphering' is appropriate.