Choose your answer?

A geologist conducts an investigation to determine the absolute age of a fossil. She then repeats the procedure three times. Which best explains why she repeated the procedure several times?

Pick from:
(a). It helps her develop better procedures..
(b). It improves the accuracy of the results..
(c). She wants all the results to be different..
(d). She has more than one hypothesis to prove..
(b).