You've failed because you failing becomes a statement rather than it becoming fact or what actually happened.
Answer is b hope this helps
The answer should be the number, or amount, of cycles that occur in a given time. Frequency is basically Hertz. Frequency is the number of waves that pass through a certain point every second. I hope that I was able to answer your question.
Peace out!
- Hershy103
E = mc^2
m = e/c^2
m = 2.7*10^16/(300000^2)
m = 300000