The answer is looking. A person can observe the things around them by just using his or her eyes and looking at a certain thing such as having to observe and pay attention to the posture of a person or their movement without having to pay attention with verbal messages.
Answer:
experimental
Explanation:
Experimental design: In research methods, the experimental design is referred to as a specific way of designing an experiment by a researcher to get valid as well as objective results. It refers to a collection of various research designs that is responsible for using controlled testing and the manipulation procedure to get knowledge of the causal processes. In most of the experimental design, one or more than one variables are being manipulated to know its effect on the dependent variable.
In the question above, the given statement signifies the use of the experimental design.
