Final answer:
The question pertains to language development in English learning, where a teacher encourages a student to use verbal communication. It encompasses the function of language and its role in representing both concrete and abstract concepts.
Step-by-step explanation:
The scenario described involves a student, Sarah, using non-verbal means to communicate and her teacher prompting her to use verbal expression. This situation relates to language development and communication which is an aspect of English language learning. The teacher's encouragement for Sarah to speak verbally aligns with the function of language as a tool for communication and reflects the process of language acquisition. This process can be complex as individuals need to connect words with their meanings and use them appropriately within their social contexts.
The examples provided, such as Helen Keller's revelation of the word 'water', illustrate the connection between language and sensory experiences. Additionally, the discussion about language being able to represent natural phenomena and abstract concepts emphasizes the idea that language is not only a referential system but also a way to convey complex and abstract ideas, shaping the way we perceive and interact with our environment and each other.