Correct option is A
Both (A) and (R) are true and (R) is the correct explanation of (A). The assertion emphasizes the importance of choosing teaching methods and content that facilitate the creation of new knowledge and the development of higher-order thinking skills, such as analysis, synthesis, and evaluation. This is critical for preparing students to navigate and succeed in a complex and ever-changing world. The reason provided, which states that children have the ability to construct and interpret new knowledge, supports the assertion by explaining why this approach is effective. Constructivist theories of learning suggest that learners actively construct their own understanding and knowledge of the world, through experiencing things and reflecting on those experiences. Hence, the reason given is an appropriate explanation for the assertion.