need help answering the question below please explain your a

need help answering the question below.
please explain your answer thanks

The reliability factor Select one: O a. is a function of the reproducibility of the fatigue test conditions O b. depends on the source of the material O c. depends on who conducts the test O d. requires that the test conform to ASTM fatigue test specifications

Solution

Answer is :

a. is a function of the reproducinility of fatigue test conditions

Explaination: The concept of reliability factor is describes in a sense that for a given sample will have a certain amount of strength resisting capacity so if the stress induced by the operation conditions exceeds this capacity, results in failures. methods of design are mainly based to the failure conditions od the sample under cyclic loading.