The correct answer is A) Orange smoke signal. The orange smoke signal is the established lifesaving signal that indicates "You are seen - Assistance will be given as soon as possible." This signal is recognized internationally as the appropriate way to visually communicate this distress message. The orange smoke is highly visible and can be detected from a distance, alerting nearby vessels or aircraft that assistance is required. The other options are incorrect because they do not represent the established lifesaving signal for this specific message. Horizontal motion of a flag, red star rockets, and green star rockets have different meanings and uses in maritime distress signaling.