in the engineering - design process diagram, what do the lines connecting the six steps show?\nthe steps…

in the engineering - design process diagram, what do the lines connecting the six steps show?\nthe steps that should be repeated or skipped, depending on the engineering - design problem\nthe correct steps to start and end with when facing an engineering - design problem\nthe possible paths to take when facing an engineering - design problem
Answer
Brief Explanation:
In the engineering - design process, the lines between steps indicate that depending on the problem, certain steps may be repeated or skipped. For example, if test results in the "Perform tests and evaluate results" step are not satisfactory, one may go back to "Optimize to improve a design" or even earlier steps. It doesn't define a strict start - end sequence or all possible paths in a comprehensive way.
Answer:
the steps that should be repeated or skipped, depending on the engineering - design problem