What is described as a gut feeling that is not necessarily backed by research?

Intuition refers to an instinctive feeling or understanding that is not derived from conscious reasoning or empirical evidence. It is often termed a "gut feeling" and can play a significant role in decision-making, especially in situations where quick judgments are necessary or when a person has extensive experience in a particular area. This type of insight is typically based on subconscious processes and past experiences rather than analytical thinking or research.

In contrast, evidence indicates conclusions that are supported by data and facts, thereby making it a rational basis for decision-making. Analysis involves a systematic examination and interpretation of data to form conclusions or make informed decisions, which is quite different from the instinctive nature of intuition. Assumptions are beliefs or statements taken for granted without proof, but they do not capture the experiential and instinctive quality that intuition embodies. Therefore, the definition and nature of intuition clearly align with the concept of a gut feeling that is often not substantiated by research, making it the correct choice in this context.