Final answer:
Syncopation and Triple meter refer to the subdivision of main beats into quicker pulses, while Dotted rhythm and Time signature do not.
Step-by-step explanation:
Syncopation and Triple meter do refer to the subdivision of main beats into quicker pulses. Syncopation is the accenting of weak beats, which creates offbeat rhythms. Triple meter includes three beats per measure, where each beat is divided into three pulses.
Dotted rhythm and Time signature do not refer to the subdivision of main beats into quicker pulses. Dotted rhythm refers to a rhythmic pattern with a longer note followed by a shorter note. Time signature simply indicates the number of beats per measure and the type of note that receives one beat.