10.1. In Wikipedia, look up "Methods of detecting exoplanets", read the intro and then scroll down to "Transit photometry", and answer the following question: To find exoplanets, how does the transit detection method work? a. Blocking the light of a star reveals the reflected light of orbiting planets. b. If a planet crosses in front of its parent star, then the observed visual brightness of the star drops by a small amount. O c. A star with a planet will wobble in response to the planet's gravity, causing it to change the speed at which it moves toward or away from the Earth. O d. The gravitational field of a star acts like a lens, magnifying the light of a distant background star. If a planet is orbiting the foreground lensing star, it will make a detectable contribution to the lensing effect