The rhythm in the exercise is being played in bar 1-2 - Imitate the rhythm in bar 3-4.
The rhythm is being played in bar 1-2
Clap/play the rhythm in bar 3-4:
Answer:
Rhythms:
Listen to the rhythm in the bar 1. Clap or play the rhythm in bar 2.
The elements in this chapter are rhythms based on triplets, quarter- and eight notes and rests.
Learn the definition on the different elements before doing the exercises.
A triplet is a type of tuplet that allows us to play three notes in the time of two notes:
Triplets can be varied using rests or ties:
“Swinging eights” or “swing”: Eight notes must be phrased as triplets, where the first and second are tied together. ( notated as normal eight notes )
You can either be clapping the rhythm, or playing it on your instrument.
The "C" tone fits all the tasks.
English (UK) 
Dansk