Final answer:
The question on how women like Katherine Johnson have impacted innovations in modern aeronautic science best broadens the report's scope by exploring the wider context of female contributions to space exploration and the advancement of aerospace technology.
Step-by-step explanation:
The question that would best broaden the focus of the student's report on mathematician Katherine Johnson is: How have women like Katherine Johnson impacted innovations in modern aeronautic science? This question allows the student to explore the wider context of Johnson's work and her contributions to space exploration. It encourages investigation into the role of female mathematicians, engineers, and scientists in advancing the field of aerospace technology. This examination can extend to other notable figures such as astronaut Mae Carol Jemison, and the collective impact of their groundbreaking work. Additionally, it also opens a discussion around the challenges and triumphs of women in the traditionally male-dominated field of aeronautics and how they have shaped the industry.