Final answer:
The translation of the Latin word 'ambulantem' is 'C) walking', as it denotes someone who is in the act of walking.
Step-by-step explanation:
The correct translation of the Latin word ambulantem in line 2 is C) walking. The word ambulantem is the accusative singular form of the present participle of ambulare, which means 'to walk'. In Latin, present participles express an ongoing action and are translated into English with the '-ing' form of the verb. Therefore, in the context given, ambulantem would describe someone who is in the act of walking. So, the best translation of ambulantem in line 2 is walking