Microbiologists Investigate Problems by Designing and Carrying Out Experiments

Microbiologists investigate problems by designing and carrying out experiments.What is true about the scientific method

A) A hypothesis is the definitive explanation to account for the observation and therefore does not need to be tested.
B) A prediction is the factor that can change but is prevented from changing during the duration of the experiment.
C) A good hypothesis is one that offers the simplest most reasonable explanation and can be tested.
D) The goal of an experiment is to prove that scientists are always correct in their predictions.