BOTH INTERNATIONAL & INLAND If it becomes necessary for a stand-on vessel to take action to avoid collision, she shall NOT, if possible, __________.

Correct Answer: Option D — turn to port for a vessel on her own port side

Under Inland Navigation Rules, for the condition where 'If it becomes necessary for a stand-on vessel to take action to avoid collision, she shall NOT, if possible,', the correct requirement is: 'turn to port for a vessel on her own port side'. This standard ensures clear navigational intent and collision avoidance.