Answer: The verb phrase can be found in the last sentence(?
As we know that frequency and wavelength are dependent on each other
and this is given by

here we know that
= wavelength
f = frequency
c = speed of wave
while for energy and intensity of wave we know that
Energy = 
here A = amplitude of wave
so energy directly depends on amplitude of wave
so correct answer will be
<em>A) Energy</em>
Answer:
False
Explanation:
From the fact that light is emitted in portion, it does not follow that light ray is discrete in structure.
The way Einstein put it was that if a beer is always sold in pint bottles, that does not mean that beer contain of indivisible pint bottles. Yet experiments in which light knocked electrons out of materials insistently made the point that light is absorbed only in the form of discrete portions. An emitted portion or quantum of light energy retains it's individuality in subsequent events as well.
This concept was first stated by Einstein in 1905. From the heuristic point of view that he developed light is always made up of discrete portions possessing energy and momentum.
Answer:
We found out more about how the universe had started (Big Bang theory), how the planets were created and how stars are born.