Which of the following layers in the ecological system theory reflects changes over time?

The choice of the Chronosystem as the correct answer is based on its role in how time influences development and experiences within the ecological system theory. The Chronosystem includes the transitions and shifts in norms, values, and events that occur over an individual's lifespan. This can encompass historical events, life transitions such as starting school or family changes, or broader societal changes, which are pivotal in understanding how these factors impact an individual's development and interactions with other systems.

In contrast, the Microsystem focuses on the immediate environment of the individual, such as family and school, and how these systems interact on a personal level. The Mesosystem examines the relationships and connections between different microsystems, like the interactions between home and school environments. The Exosystem encompasses broader social systems that indirectly influence the individual, such as parental workplaces or community resources. While these layers are fundamental to understanding ecological relationships, they do not specifically address the influence of time and change in the same way that the Chronosystem does.