vector b is the answer...............
Answer:
A photon of wavelength 103 nm is released
Explanation:
When an electron in an atom jumps from a higher energy level to a lower energy level, it releases a photon whose energy is equal to the difference in energy between the two levels.
For example, if we are talking about a hydrogen atom, the energy of the levels are:

So, the energy of the photon released when the electron jumps from the level n=3 to n=1 is

In Joules,

We can also find the wavelength of this photon, using the equation:

Railroad steel wheels. Bowling ball.
The inaccurate measurements must be similar to the other two measurements (ex; 590, 589, 599), but different from the actual volume of water. (Ex; the actual volume is let say.. 100, but you measured 50, 49, 40)