Answer:
it gave evidence for the particle nature of light
Explanation:
As per Huygen's explanation to the theory of light we know that the light shows the phenomenon of refraction, reflection, polarization, diffraction etc
All the above said phenomenon is showing the wave nature of light.
This all phenomenon was experimentally verified and all excepts that light is of wave nature
But after Einstein shows his photoelectric effect to prove that light has particle nature
In this experiment he shows that when light of finite frequency incident upon photo sensitive metal then it ejects out the electron from it.
This is the verification of particle nature of light
so here correct answer would be
B. it gave evidence for the particle nature of light
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