Final answer:
Georgia O'Keeffe has often been called a pioneer in the art world due to her unique style, groundbreaking achievements, and success as a female artist in a male-dominated field.
Step-by-step explanation:
Georgia O'Keeffe has often been called a pioneer in the art world due to her significant contributions and groundbreaking achievements. She developed her own unique style and vision, focusing on abstracted drawings and oversized depictions of flowers. O'Keeffe's work challenged traditional art norms and pushed the boundaries of what was considered acceptable in the male-dominated art world. Her success as a female artist in a time when women faced significant obstacles solidified her status as a pioneer.