//Opción 1:
function areYouPlayingBanjo(name) {
  return name + (name[0].toLowerCase() == 'r' ? ' plays' : ' does not play') + " banjo";
}

//Opción 2:
function areYouPlayingBanjo(name) {
  const letra = name.charAt(0);
  if (letra === "r" || letra === "R") {
    return name + " toca el banjo";
  }
  return name + " no toca el banjo";
}