Concept:Observation method is the best technique to study child behaviour because it records natural actions without interference.
Explanation:The observation method involves watching a child's behaviour, recording the observations, and then analyzing them to reach conclusions.
It is a systematic research method in which the researcher observes behaviour without influencing or interfering with the child.
This makes it ideal for studying children who may not express their thoughts clearly through interviews.
In the interview method, one talks to the person and asks questions, but young children may not respond reliably.
Sociometry measures interpersonal relationships in a group, not individual behaviour.
The inspection method checks an individual against established standards, which is not suitable for natural behaviour study.
Hence, observation provides the most accurate and natural understanding of child behaviour.
Answer:Therefore, the best method for the study of child behaviour is the observation method (Option C).