Final answer:
2) savage. The synonym for 'truculent' is 'savage', which means fierce, cruel or ready to fight, reflecting the context of a dragon in battle.
Step-by-step explanation:
The synonym of truculent in the context of the sentence 'Only one brave warrior volunteered to battle the truculent dragon' is savage. The word 'truculent' describes someone or something that is fierce, cruel, or ready to fight, which aligns with the meaning of 'savage'. In contrast, 'ravenous' describes extreme hunger, 'tame' implies docility or being domesticated, and 'gentle' denotes a kind and mild manner. Therefore, the correct synonym in this list for 'truculent' is savage, option 2.