这使得选择3成为最令人期待的追溯方法。
This makes Option 3 the most desirable traceability approach.
这些方法更具追溯能力，它们基于在实现阶段执行的数量测量。
These methods are more of retrospective approaches and they are based on quantitative measurements that are performed during implementation phase.
在生成评估方面，Self Check提供了一些严格标准，但方法类似追溯。
Self Check provides some rigor in terms of producing an assessment, but the approach resembles a retrospective.
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