Final answer:
The central idea of this text is that Sowers worked her way into coaching professional football to use her position as a platform for equal rights.
Step-by-step explanation:
The central idea of this text is Option 4: Sowers worked her way into coaching professional football, in order to use her position as a platform for equal rights. This option states that Sowers worked hard to become the first woman to coach in a Super Bowl, and she did so with the goal of using her position to promote gender equality. The text mentions her passion for fighting for gender equality and her experiences with sexism, but the main focus is on how she worked her way into coaching football to advocate for equal rights.