The answer is C. Columbus.
Galileo, Copernicus, Bhaskara, and Aryabhatta were all astronomers who made significant contributions to our understanding of the universe. Galileo was the first person to use a telescope to observe the sky, and he made many important discoveries, including the four largest moons of Jupiter. Copernicus was the first person to propose that the Earth and other planets revolve around the Sun, and his work helped to overthrow the geocentric model of the universe. Bhaskara was an Indian mathematician and astronomer who made important contributions to the field of trigonometry. Aryabhatta was an Indian mathematician and astronomer who is considered to be the father of Indian mathematics. He made many important discoveries, including the decimal system and the concept of zero.
Columbus was an Italian explorer who is credited with discovering the Americas. However, his discoveries did not have a significant impact on astronomy.