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Final answer:The answer to the question is D. Nasolabial sulcus. This is considered an acquired facial marking as it becomes more pronounced with age and is not a natural anatomical feature present from birth like the other options.Explanation:The question asks about identifying an acquired facial marking from a list of features that are usually anatomical landmarks of the face. Three of the options (A. Labiomental sulcus, B. Philtrum, C. Angulus oris eminence) are typically natural anatomical features present from birth on most individuals. On the other hand, option D. Nasolabial sulcus can be considered an acquired marking because it tends to become more pronounced with age due to facial expressions and movement. Therefore, the nasolabial sulcus is the acquired facial marking. Acquired facial markings can include wrinkles, creases, and lines that develop over time, unlike congenital features that are present since birth....