Option 1 -> Amenable means willing to cooperate or agree; this is opposite to recalcitrant.
Option 2 -> Compliant means obedient and willing to follow rules; this is opposite to recalcitrant.
Option 3 -> Defiant means openly resisting or refusing to obey authority; this matches the meaning of recalcitrant.
Option 4 -> Rational means logical and reasonable; this is unrelated to the defiant nature of recalcitrant.
Hence, Option 3: Defiant -> Recalcitrant describes someone who is stubbornly disobedient and refuses to comply with authority, making "defiant" the closest synonym, while amenable and compliant are actually antonyms -> correct