Observation method consist of which observer methods?

Explanation

The answer is: (d) Both (a) & (b)(a) Participant observer and (b) Non-participant observer are both methods used in observation research.Participant observer is a research method where the researcher becomes involved in the activity or group they are studying. This can provide rich and detailed data, but it can also be difficult to remain objective.Non-participant observer is a research method where the researcher observes the activity or group from a distance, without participating themselves. This can help to ensure objectivity, but it may also mean that the researcher misses out on some important details.Since observation methods can encompass both participant and non-participant approaches, the answer is (d) Both (a) & (b).