30 points people i need this asap please i will mark braily if correct

C.

Explanation:

Empirical evidence is evidences obtained by direct observation, sensual perception, or direct measurement. It is then processed and useful data gathered and stored in a material form or documented to provide a record of the measurement.

With the aid of empirical evidence, it is possible for researchers to find answers to question regarding topics that can vastly impact everyday life.

With empirical evidence, it is possible to determine the effects of treatment in a study such as the invention of working car safety devices such as seat belts and airbags.

a=c and then d= c because of the band so you get ac/dc and you add them together you get sound waves