Fill in the missing letters in the paragraph.
The number of underlines shows how many letters you need to fill in. You may answer with the full word or only the missing part.
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Child mental development ref_ _ _ to the gradual growth of cognitive, emotional, and social abilities during early life. Researchers have obs_ _ _ _ _ that children ac_ _ _ _ _ language, problem-solving skills, and self-regulation through continuous interaction with their environment. These abilities do not develop aut_ _ _ _ _ _ _ _ _ _ ; rather, they are shaped by both biological factors and social experiences. Studies sug_ _ _ _ that supportive caregiving and meaningful stimulation play a critical r_ _ _ in promoting healthy mental development du _ _ _ _ childhood.