To solve this problem, we need to identify the mechanism that competing species might have evolved for their survival in spite of interspecific competition.$\newline$Let's analyze each option:$\newline \bullet$Resource partitioning:$\newline$ - Resource partitioning is a process where competing species use the environment differently in a way that helps them to coexist.$\newline$ - This can involve using different resources or using the same resources at different times or in different ways.$\newline$ - It reduces direct competition and allows species to survive alongside each other.$\newline \bullet$Competitive release:$\newline$ - Competitive release occurs when a species expands its niche in response to the removal of a competitor.$\newline$ - This is not a mechanism evolved for survival in the presence of competition, but rather a response to the absence of competition.$\newline \bullet$Mutualism:$\newline$ - Mutualism is a type of interaction where both species benefit from the relationship.$\newline$ - While beneficial, it is not specifically a mechanism to reduce competition.$\newline \bullet$Predation:$\newline$ - Predation involves one species preying on another.$\newline$ - It is not a mechanism for reducing competition between species.$\newline$Based on the analysis, resource partitioning is the mechanism that allows competing species to coexist by reducing direct competition.$\newline$Therefore, the correct option is Option 1: Resource partitioning.