Final answer:
A toddler's progression from making nonsensical sounds to speaking intelligible language reflects the 'hierarchy of development' for language skills, indicating both an innate biological ability for language acquisition and the influence of environmental learning.
Step-by-step explanation:
A toddler learning to make sounds such as "mememe" and "bagabaga" before learning how to use intelligible language indicates a structure and process to development, which is known as the B) hierarchy of development. This concept reflects the stages through which children develop language skills, starting with pre-linguistic sounds and gradually progressing to meaningful words and sentences. This developmental process is universal across cultures, suggesting a structured hierarchy in how language abilities unfold.
Children have an innate biological capacity for language acquisition, which unfolds in a predictable sequence from simple sounds to complex language use. Research indicates that while exposure to language and environmental reinforcement play roles, children also exhibit a predisposed learning mechanism for developing language skills. This capacity is maximized early in life, demonstrating a universal pattern regardless of cultural differences.
The sounds "mememe" and "bagabaga" are examples of a child's early experimentation with phonemes. As they grow, children refine their use of these phonetic elements, aligning with the phonemes of the language in their environment. This early experimentation with sounds is part of the hierarchical progression towards fluent language use.