The correct answer is Sensation; perception
Sensation and perception are two processes that correlate to help us experience and interpret the world. Despite being different processes, they have many similarities and share common goals, both have the purpose of guaranteeing the subject's well-being from his adaptation to the environment.
In a synthetic way, the human being apprehends his environment from his sensation - which is not limited to the five senses, as we will talk about later - and endows his sensations with meaning from an interpretation, which is called perception.
The sensation, by itself, means the process of experiencing the world through the senses, which is provided by the sensory organs. The sensory organs, in turn, capture stimuli of any class. That is, sensation is the act of receiving stimuli from the environment.
Perception, on the other hand, consists of giving meaning to a given experience. Perception then becomes the act of interpreting the stimuli that have been added to us through the sensory organs.
Each subject perceives a particular stimulus according to their historical narratives where the same stimulus was present to a greater or lesser extent. For example, lightning can be scary for some and mean nothing to others. This is due to the learning that came from past experiences.
The sensation is deeply rooted in the biological, in the apprehension by the sensory organs that capture the stimulus and bring them to our organism. However, the perception is completely related to the psychological; for involving past experiences and the subject's relationship with certain stimuli.
Humanistic approaches work a lot with the individual's perception of a particular event. For humanism, the change in the meaning of an experience can enhance the subject and give back their autonomy, and this happens through perception through a new look and through techniques that involve revisiting the same events that generated the symptoms.
Sensation and perception are processes that go together and are extremely important for the constitution of the subject, as well as for his survival in his environment. The importance of your study is due to the positive impacts of "reframing" evidenced through numerous researches, today a unique tool in psychotherapy.