Final answer:
Master Gardeners are expected to recommend information that is based, approved, and verified by reputable scientific organizations such as the US National Academy of Sciences, Engineering, and Medicine.
Step-by-step explanation:
When making recommendations, Master Gardeners are expected to recommend information that is based, approved, and verified by reputable scientific organizations. For example, the US National Academy of Sciences, Engineering, and Medicine is one such organization that provides scientifically sound information on topics related to gardening and agriculture. Other organizations like the American Medical Association may also have relevant information on gardening practices that impact human health.