Joshua has been trying unsuccessfully for days to remember the name of a song that was popular when he was in Grade 10. The "oldies" radio station just played the song, and after hearing only the first few seconds, the name of the song "popped into his head." What was provided by the opening seconds of the song?
◦ retroactive cues
◦ proactive cues
◦ context cues
◦ retrieval cues