To solve this problem, we need to understand the concept of vertical distribution in a biotic community.$\newline$Let's analyze the given options:$\newline \bullet$Option 1: Divergence - This term generally refers to the process of developing in different directions or the evolution of different forms or structures. It is not related to vertical distribution.$\newline \bullet$Option 2: Stratification - This refers to the arrangement or classification of something into different layers or strata. In ecology, stratification describes the vertical layering of a habitat, where different species occupy different levels. This matches the concept of vertical distribution in a biotic community.$\newline \bullet$Option 3: Zonation - This term refers to the distribution of species or communities into distinct zones, often horizontally, based on environmental gradients. It is not specifically about vertical distribution.$\newline \bullet$Option 4: Pyramid - This term is often used to describe ecological pyramids, which represent the trophic levels in an ecosystem. It does not specifically refer to vertical distribution.$\newline$Based on the analysis, the correct answer is Option 2: Stratification, as it accurately describes the vertical distribution of species in a biotic community.