Concept:Joseph’s good conduct is shown through his faithful service in Potiphar’s house.Explanation:Joseph was sold to Potiphar, an officer of Pharaoh.He worked diligently and with integrity in Potiphar’s household.God was with Joseph, and Potiphar saw this, so he placed Joseph in charge of his entire house.Therefore, Joseph behaved well because he served faithfully in Potiphar’s house.Answer:D. served diligently in Potiphar’s house