What is the primary function of first-letter mnemonics?

The primary function of first-letter mnemonics is to form new words or phrases using the initial letters of a series of concepts, ideas, or items. This technique is particularly effective in memory retention because it simplifies complex information into a memorable format. By creating an acronym or a catchy phrase, learners can easily recall a list of items or concepts associated with those letters.

For instance, in memorizing the colors of the rainbow, the phrase "ROYGBIV" is formed from the initial letters of red, orange, yellow, green, blue, indigo, and violet. This method helps reinforce memory by transforming disparate pieces of information into a cohesive and easily retrievable unit.

Other options describe different mnemonic strategies but don't focus on the specific use of initial letters to form new words or phrases, which is the essence of first-letter mnemonics.