The correct answer is D. Inductive generalizations are not easy, cost effective, and time saving methods. They can be time-consuming and expensive, and they may not always lead to accurate results.
Inductive generalizations are based on observed facts and realistic foundations. They are scientific in character and some of the important theorems of the physical and social sciences have been developed through this method. Inductive generalizations are helpful in finding out the material truth.
However, inductive generalizations are not always easy, cost effective, and time saving methods. They can be time-consuming and expensive, and they may not always lead to accurate results. For example, if you want to make an inductive generalization about the population of a country, you would need to collect data from a representative sample of the population. This can be a time-consuming and expensive process. Additionally, even if you collect accurate data, there is always the possibility that your inductive generalization will be wrong. This is because inductive generalizations are based on probability, not certainty.
Overall, inductive generalizations are a valuable tool for scientific inquiry, but they should not be used without careful consideration of their limitations.