Correct Answer:
Option A - George Lemaitre is associated with discovery of the Big Bang Theory. Georges Edward Lemaitre was a Belgian astronomer and cosmologist. He was the first to propose the modern Big Bang Theory in 1927. According to the Big Bang Theory the expansion of the observable universe began with the explosion of a single particle at a definite point in time.
A. George Lemaitre is associated with discovery of the Big Bang Theory. Georges Edward Lemaitre was a Belgian astronomer and cosmologist. He was the first to propose the modern Big Bang Theory in 1927. According to the Big Bang Theory the expansion of the observable universe began with the explosion of a single particle at a definite point in time.