Correct Answer & Explanation
Option D
The word 'Criterion' refers to a standard or principle by which something is judged or evaluated (বাংলা অর্থ: মাপকাঠি / মানদণ্ড).
• The correct synonym is 'Touchstone' (or standard, test, benchmark).
• 'Appendage' means an addition or adjunct.
• 'Voracity' and 'Avarice' mean extreme greed or cupidity.