Answer:
naturalistic observation
Explanation:
Naturalistic observation: In scientific or psychological research, the term naturalistic observation is defined as one of the research methods in which the researcher or the experimenter tends to study and observe the interested participants or subjects into their natural surroundings. The researcher or the experiments makes an effort to note everything they watch and notice about the participants or subjects being studied.
In naturalistic observation, there's a great chance of the results to be biased as the researcher or the experimenter makes results based only on his or her observation i.e, it lacks scientific approval.
In the question above, the researcher is using naturalistic observation.
The Indus River Valley Civilization, 3300-1300 BCE, also known as the Harappan Civilization, extended from modern-day northeast Afghanistan to Pakistan and northwest India.
Important innovations of this civilization include standardized weights and measures, seal carving, and metallurgy with copper, bronze, lead, and tin.
Little is understood about the Indus s
The two priests had agreed not to tell anyone that the king had been murdered.
