A Green Belt removed a Non$-$Value$-$Adding inspection step from the process. This was a redundant step, but there is concern that defects might still get through the process. Given the concern, which of the following is the best potential next step?

Replace the people who were working on the process

Brainstorm Mistake$-$Proofing ideas $($Poka$-$yokes$)$ to prevent the errors that the inspection step was set up to catch

Add an inspection step at another point in the process to catch even more potential defects

Stop producing the types of units that were experiencing defects