To solve this problem, we need to identify the type of interspecific interaction that is beneficial for one species and detrimental for another. Let's analyze each option:$\newline \bullet$Option 1: Predation$\newline$ - In predation, one species (the predator) benefits by feeding on another species (the prey), which is harmed.$\newline$ - This interaction is represented as (+) for the predator and (–) for the prey.$\newline$ - Therefore, predation fits the description of having a (+) for one species and (–) for another.$\newline \bullet$Option 2: Amensalism$\newline$ - In amensalism, one species is harmed while the other is unaffected.$\newline$ - This interaction is represented as (0) for one species and (–) for the other.$\newline$ - Therefore, amensalism does not fit the description.$\newline \bullet$Option 3: Commensalism$\newline$ - In commensalism, one species benefits while the other is unaffected.$\newline$ - This interaction is represented as (+) for one species and (0) for the other.$\newline$ - Therefore, commensalism does not fit the description.$\newline \bullet$Option 4: Competition$\newline$ - In competition, both species are harmed as they compete for the same resources.$\newline$ - This interaction is represented as (–) for both species.$\newline$ - Therefore, competition does not fit the description.$\newline$Based on the analysis, the correct interaction that can be assigned (+) for one species and (–) for another is:$\newline$Option 1: Predation$\newline$This corresponds to the correct option, which is Option 1.