The fact that defects are usually not evenly distributed among the various modules that make up a software application, but rather their distribution tend to reflect the Pareto principle:
A.
is a false myth
B.
is expressed by the testing principle referred to as Tests wear out'
C.
is expressed by the testing principle referred to as 'Defects cluster together'
D.
is expressed by the testing principle referred to as 'Bug prediction'
The fact that defects are usually not evenly distributed among the various modules that make up a software application, but rather their distribution tend to reflect the Pareto principle, is expressed by the testing principle referred to as ‘Defects cluster together’. This principle states that a small number of modules contain most of the defects detected, or that a small number of causes are responsible for most of the defects. This principle can be used to guide the test analysis and design activities, by prioritizing thetesting of the most critical or risky modules, or by applying more rigorous test techniques to them. Therefore, option C is the correct answer.
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