While her team was developing an eco-friendly cleaning wipe, Jackie suggested using a particular material, which triggered Jamal's idea to try a similar but faster-dissolving material. The team adopted Jamal's idea, and the product succeeded. When Jamal's boss asked whose idea it was to use the chosen material, Jamal said it was his, but that he wouldn't have thought of it without Jackie's input. In this example, Jamal most clearly demonstrates which of the following employer-valued attitudes?​
a.​ Honesty and team spirit
b. Optimism and health consciousness​
c. Health consciousness and culture appreciation​
d. Self-motivation and flexibility​