In the theoretical taxonomy of second language acquisition and communicative methodology, spoken discourse and aural comprehension are governed by distinct pragmatic functions and psycholinguistic processing mechanisms. Consider the following four complex propositions regarding the role of listening and speaking and the functions of language:I. Transactional language functions primarily to convey propositional information, exchange goods, or negotiate specific services where the primary focus is on the message outcome and communicative efficiency rather than maintaining social solidarity.II. Interactional language is strictly interpersonal and socio-affective in orientation, serving to establish, nurture, and sustain social relationships, rapport, and group camaraderie without necessarily transmitting complex factual data.III. Bottom-up processing in listening relies on higher-level schematic knowledge, discourse context, and pragmatic inferencing to predict overarching meaning before individual acoustic signals or phonemes are perceived and decoded.IV. Speaking proficiency under real-time communicative constraints requires managing oral production phenomena such as formulaic chunks, ellipsis, hesitation markers, phonological assimilation, and performance pauses.Identify the option that correctly evaluates the pedagogical and linguistic validity of propositions I, II, III, and IV.