Answer: b. music mnemonics
A mnemonic device is a strategy that is used to retain information in your memory. Mnemonics consist of encoding, retrieval cues and imagery as tools that help us with storing and retrieval of memories. This can include songs, short poems, acronyms, rhymes, memorable phrases, visual images or kinaesthetic actions. The use of songs and music to retain information is called music mnemonics (such as the alphabet song).