Answer
Cesium-134 decays faster.
Work Step by Step
The continuous decay rate for Cesium-134 is $33.6\%=0.336$ per year, while the decay rate of Thulium-171 is $30.3\%=0.303$ per year.
Since $0.336> 0.303$, Cesium-134 undergoes a more rapid transformation, meaning it decays faster.