In advanced second language acquisition (SLA) theory and pedagogical linguistics, the distinction between Noam Chomsky's nativist hypotheses and Stephen Krashen's Monitor Model forms a cornerstone of modern language acquisition paradigms. Consider the following four advanced propositions regarding these theoretical frameworks: I. Chomsky's Universal Grammar (UG) model posits that human infants are equipped with an innate, domain-specific cognitive organ—the Language Acquisition Device (LAD)—which contains abstract principles common to all human languages, successfully resolving the 'poverty of the stimulus' dilemma by enabling children to extrapolate complex grammars from degenerate primary linguistic data. II. Krashen's Monitor Hypothesis asserts that conscious declarative knowledge of grammatical rules functions exclusively as a 'Monitor' or editor, which can be utilized to alter and polish second language output only when the learner has sufficient time, focuses on formal correctness, and possesses explicit rule mastery. III. Krashen's Affective Filter Hypothesis contends that emotional variables such as high anxiety, low self-confidence, and academic defensiveness can raise the affective filter, thereby acting as a mental block that prevents comprehensible input from reaching the language acquisition device, whereas low affective filters facilitate subconscious language intake. IV. In direct theoretical alignment with Chomsky's nativist innateness hypothesis, connectionist and emergentist frameworks maintain that syntactic structures are hardwired pre-linguistic abstractions that require zero environmental statistical distributional learning or frequency-based entrenchment to manifest in child language development. Identify the option that correctly evaluates the linguistic, psychological, and theoretical validity of propositions I, II, III, and IV according to modern second language acquisition research and Second-language acquisition principles.