PCA (Prometheus Certified Associate) sample exam question with answer 117

Question:
Which type of observability data is BEST represented by the following description?
Temperature of a CPU in degrees Fahrenheit

1. Trace
2. Log
3. Metric
4. Event

Answer:
C - is the correct answer. The given description details a numerical measurement which is the definition of a metric
A - Traces track details of a transaction through multiple sections or services
B - the temperature of a CPU is a numerical measurement. Logs are text-based
D - an event is simply an occurrence of something