Correct option is C
Statement I is correct: Explicit long-term memory is a type of memory that is consciously accessible and can be deliberately recalled. Propositional networks are a way of representing knowledge in a structured format, and they are a common way to model how information is stored in explicit long-term memory.
Statement II is incorrect: Implicit long-term memory is a type of memory that is not consciously accessible and cannot be deliberately recalled. However, implicit long-term memories can still affect our thinking and behavior. For example, implicit long-term memories can influence our skills, habits, and preferences.