Concept:Malnutrition refers to a lack of essential nutrients needed for healthy body and brain function.
Explanation:When a child is malnourished, brain development and cognitive abilities are impaired.
This leads to poor concentration, memory problems, and slower learning progress.
Curiosity, metacognition, and mastery-oriented goals all support and enhance learning.
Thus, among the given options, only malnutrition negatively affects learning.
Answer:A. Malnutrition