NCF 2005 emphasizes 'process validity' in science education. What does this mean?
AIt should focus on rote memorization of scientific facts and theories.
BIt should prioritize standardized testing to measure students' understanding of scientific concepts.
CIt should emphasize the historical development of scientific discoveries rather than the process of discovery.
DIt should provide opportunities for students to acquire skills and methods that lead to the generation and validation of scientific knowledge.