D. object permanence. A theory by Swiss psychologist Jian Piaget studied and theorized that at certain age of infancy, an awareness is developed that objects and people continue to exist even if they cannot see them. This manifested development is seen when infants play the games of peekaboo or hiding toys under the blankets.
Answer: Cluster analysis
Explanation:
Cluster analysis is the grouping process in which the elements persisting more similarities in nature , characteristics or appearance are gathered as compared to any other group. This type of group is known as cluster.
According to the question, Samuel is using the method of cluster analysis for his research to analyze the behavior of customers. He is making the cluster of women according to the age and their preferences about the purchase of washing machine.
All of them believe in inly one god
Answer:
attrition
Explanation:
Attrition in research is said to be when individuals or participants abort or stop his/her involvement during a research study. It almost always happens to some extent. participants leaves a research study due to certain factors or circumstances usually beyond their control. when participant of a research leaves or remove his/herself from an experiment, it sometimes can make the study to be aborted, findings experience difficulties and slowing down of research study.
The dropping of crystals into clouds to cause rain.
