Which of the following is not a step in scientific thinking?

In the context of scientific thinking, the process typically involves a systematic approach to inquiry that includes observing phenomena, forming hypotheses, testing those hypotheses through experimentation, and drawing conclusions based on the data collected.

In this framework, 'observe' is crucial as it forms the basis of questioning and hypothesis formation. Observing allows scientists to gather information about the world around them, which informs their scientific inquiries. Similarly, 'test' is essential, as it involves conducting experiments to evaluate the validity of the hypotheses formed from initial observations. Finally, 'conclude' is a key step where scientists analyze the results of their tests to determine whether their hypotheses were supported or refuted.

'Invent', however, does not fit neatly into the scientific method. While creativity is an important aspect of science, particularly in the development of new theories or experimental designs, the term 'invent' implies a more creative or subjective process rather than the objective, methodical steps that characterize scientific inquiry. Therefore, this choice does not align with the structured approach of scientific thinking, which emphasizes observation, testing, and concluding based on empirical evidence.