Question

(1) In 1905 Einstein interpreted the “photoelectric effect” of light, a phenomenon that cannot be explained by the wave theory of light. (2) When a photon strikes an electron, the resulting action is analogous to the collision of billiard balls. (3) The effect of such collisions can be observed when light falling on a metal plate produces a shower of electrons. (4) Einstein deduced that light is not a continuous stream of energy but is composed of individual particles or bundles of energy, which he called photons.
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4) Although sentence 1 is placed appropriately, the rest of the paragraph above is not well organized. Which of the following reorderings of sentences 2-4 most improves the continuity of the paragraph?

A) 2, 4, 3

B) 3, 2, 4

C) 3, 4, 2

D) 4, 2, 3
My choice is (D)

Answer 1

I think the best answer isn't shown -- The correct order should be: 1, 4, 2, 3.