Concept:Receptive language skills are the abilities to receive and understand language input. They include listening and reading, where the learner decodes meaning rather than producing language.Explanation:Receptive skills involve taking in language through hearing or seeing. Listening and reading are the two main receptive skills. When you listen to speech or read a text, you receive the language and interpret its meaning. This is different from productive skills (speaking and writing), where you create language. The key point is understanding and comprehension of spoken or written language. The correct definition must cover both hearing and reading. Option C states "the ability to understand and comprehend spoken languages that one hears or reads." This correctly includes both listening and reading. Options A and D are too narrow, and option B adds "express" which is a productive skill. Hence, option C is the complete and accurate description.Answer:Option C.