Final answer:
The testing step in the systems development phase involves evaluating processed information to verify the correctness of results, often involving mathematical and scientific assessments to refine the design or select a new concept if necessary.
Step-by-step explanation:
In the testing step of the systems development phase, processed information is evaluated to see whether the results are correct. This phase is a vital part of the iterative design process in which prototypes are tested to ensure that the system meets all requirements and performs as expected. Mathematical and science connections play a significant role here, as they allow the performance of a prototype to be compared against an ideal benchmark derived from theoretical models. If the prototype's performance is lacking or does not meet the necessary constraints, the design may need to be refined or even revisited completely to select an alternative concept.