The next class of wave or oscillation detector is the magnetic detector depending in the powers of electric oscillations to affect the magnetic state of iron.

Options

A. depend on the power in
B. depending upon the power of
C. depends upon the power in
D. deepening upon the power of

Answer

B

Explanation

The most suitable phrase that should replace the phrase given in bold is "demanding upon the power of". Expect for option (b) none other option are in absolue grammatical syntax. Hence, it becomes the most viable answer choice.