Final answer:
Bananas reveal the weakness of modern agriculture by demonstrating the risks associated with monoculture practices, such as disease susceptibility and lack of crop biodiversity.
Step-by-step explanation:
Bananas showcase a weakness of modern agriculture because they are prone to diseases that spread quickly in large monoculture plantations. This lack of biodiversity in agricultural practices means that when a disease hits, as there's little genetic variation, it can devastate entire crops. Monocropping, the practice of growing a single type of crop over a wide area, is especially risky because it leaves the food supply vulnerable to pests, diseases, and market shifts. Countries with less diverse economies are particularly susceptible to these challenges.