Answer: The Scientific method is a deductive process based on testable and measurable event.
Therefore the answer is option b
Explanation: The scientific method are those emperical method scientist apply to prove it's test or observation, so as to determine factors and variables involved in an observation, and arrive to a conclusion. A scientist must have a testable and measurable process which lead him to a conclusion. Scientific method believe in experimental method, which does not have the same procedure for all experiment, Science does not have a rigid process. For example, one may decide to use filtration method to purify water, another may decide to use evaporation method to purify water. Which means scientific method for a process change and improve, as science expand.