Concept:EVS is child-centered and stresses experiential learning through direct interaction with the environment.Explanation:EVS helps children explore natural and human-made surroundings. It builds a holistic perspective by blending science and social science. This is best achieved through hands-on experiments, not by rote learning from books or tests. Therefore, an EVS teacher should focus exclusively on experiments. They should not rely on books and tests. They also should not accept or respect the perceptions of children or the views of parents, as these do not align with the concrete, experiential approach of EVS.Answer:Option A: focus exclusively on experiments.