Unfortunately, the outcome of the prototype that Johnson Hospitality Pvt Ltd. envisioned was not successful. The robot

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Unfortunately, the outcome of the prototype that Johnson Hospitality Pvt Ltd. envisioned was not successful. The robot could not correctly identify the ingredients as per the digital instructions and ended up mixing them, thus resulting in a substandard dish. The management wants to amend the situation for the robot's next testing due in a month

. Which technique could the management use to identify possible causes of failure?