I have to say B. The rest were concepts made in Greece, by Greek philosophers, politicians, or mathematicians. An example for an advancement in math is the Pythagorean Theorem. I hope this helps!
You must measure the angle with a measurement tool and then write down the angles on paper and do the equation yourself and see what you get if it doesn’t match with one person there wrong if it does match and they solved it the way you did that’s the person that did it right.
Hope this helps:D
Explanation:
Ida Tarbell
Through her achievements, she not only helped to expand the role of the newspaper in modern society and stimulate the Progressive reform movement, but she also became a role model for women wishing to become professional journalists.