Final answer:
Subliminal means beneath the level of consciousness, describing inputs that affect our thoughts and behaviors without us being aware of them.
Step-by-step explanation:
We can infer from the passage that subliminal means c. beneath the level of consciousness. Subliminal messages are inputs, like words or images, that are presented to individuals without them being consciously aware of the stimuli. The passage provides multiple studies as evidence, demonstrating how subliminal messages can influence behavior and perception.
For instance, individuals exposed subliminally to words associated with competitiveness later behaved more competitively. Similarly, those who were subliminally exposed to words of positive or negative traits subsequently judged a neutral description of a person's personality in line with the trait suggested by the subliminal words. This highlights the implicit processing capabilities of our brains, revealing how subliminal stimulation can affect our thoughts and behaviors without our conscious awareness.