Final answer:
Gold (D) will react least rapidly with nonoxidizing acid because it is a noble metal and is found at the bottom of the activity series, indicating it has the lowest tendency to be oxidized.
Step-by-step explanation:
The metal that will react least rapidly with nonoxidizing acid is Gold(D). According to the activity series, metals are listed in order of their reactivity, with the most reactive at the top and the least reactive at the bottom. Since Gold is a noble metal, it is found at the very bottom of the activity series, indicating that it has the lowest tendency to be oxidized compared to more reactive metals such as sodium, aluminum, and zinc. Noble metals like gold do not react with nonoxidizing acids, making it the correct answer. On the other hand, sodium reacts vigorously with water, and zinc reacts with hydrochloric acid, both of which are higher in the activity series and are more reactive than gold.