The correct answer to this question would alternatives B) " made telescopic observations that confirmed the earth travels around the sun." and D) "improved the telescope, thermometer, and compass."
Galileo was an Italian physicist, mathematician, astronomer and philosopher was one of the most important scientists ever.
His work influenced millions of people and paved the way for many more scientific discoveries and studies. He improved the telescope which led to astronomical observations that led us to believe that the planets revolve around the sun, and he also discovered the four most massive moons of Jupiter, now known as Galilean Moons.
