Question ID:PT43 S3 Q10 Passage:Recently, photons and neutrinos emitted by a distant supernova, an explosion of a star, reached Earth at virtually the same time. This finding supports Einstein's claim that gravity is a property of space itself, in the sense that a body exerts gravitational pull by curving the space around it. The simultaneous arrival of the photons and neutrinos is evidence that the space through which they traveled was curved. Stem:Which one of the following, if true, would most strengthen the reasoning above? Correct Answer Choice:BChoice A:Einstein predicted that photons and neutrinos emitted by any one supernova would reach Earth simultaneously. Choice B:If gravity is not a property of space itself, then photons and neutrinos emitted simultaneously by a distant event will reach Earth at different times. Choice C:Photons and neutrinos emitted by distant events would be undetectable on Earth if Einstein's claim that gravity is a property of space itself were correct. Choice D:Photons and neutrinos were the only kinds of particles that reached Earth from the supernova. Choice E:Prior to the simultaneous arrival of photons and neutrinos from the supernova, there was no empirical evidence for Einstein's claim that gravity is a property of space itself.