Answer:
Observational measurement
Step-by-step explanation:
Observational measurement: In psychological research, it possesses the description and observation of a participant's behavior. The observational measurement is a type of correlational research method in which the researcher observes the ongoing behavior of the participant, and doesn't manipulate anything.
In other words, this is a systematic approach for interpreting and detecting behavior of the participants in a given study under natural contexts.
Example: A survey related to anything.
Felipe, measurement in the classroom best illustrates the observational measurement.