What theory suggests that language development is triggered by environmental stimuli?

The correct answer is the Learning Approach. This theory posits that language development is primarily influenced and stimulated by environmental factors, such as interaction with caregivers and exposure to language in various contexts. It emphasizes the role of imitation, reinforcement, and social interaction in acquiring language skills.

According to this theory, children learn language similarly to how they learn other behaviors—through a process of conditioning and reinforcement, where environmental stimuli encourage the use and understanding of language. By hearing and practicing language in context, children gradually develop their linguistic capabilities.

The other approaches mentioned focus on different aspects of language development. The Linguistic Approach emphasizes internal stages of language acquisition rather than external stimuli. The Cognitive Approach links language to cognitive processes, suggesting that language develops as children's cognitive abilities evolve. The Sociocognitive Approach combines social interaction and cognitive elements but does not focus solely on environmental stimuli as the main driver for language acquisition.