To solve this problem, we need to identify which population interaction is widely used in medical science for the production of antibiotics. Let's analyze each option:$\newline \bullet$Parasitism:$\newline$ - Parasitism is an interaction where one organism (the parasite) benefits at the expense of another organism (the host).$\newline$ - This interaction is not typically used for antibiotic production.$\newline \bullet$Mutualism:$\newline$ - Mutualism is an interaction where both organisms benefit from the relationship.$\newline$ - While beneficial, it is not directly related to antibiotic production.$\newline \bullet$Commensalism:$\newline$ - Commensalism is an interaction where one organism benefits while the other is neither helped nor harmed.$\newline$ - This interaction is not used for antibiotic production.$\newline \bullet$Amensalism:$\newline$ - Amensalism is an interaction where one organism is inhibited or destroyed while the other remains unaffected.$\newline$ - This interaction is widely used in the production of antibiotics, as certain microorganisms produce substances that inhibit or kill other microorganisms.$\newline$Therefore, the correct answer is Option 4: Amensalism.