Answer is D. Because the chemoreceptors located in the carotid and aortic bodies monitor the concentration of carbon dioxide and oxygen in the arterial blood.
Knowing how to easily manipulate the people around you. Not exactly a good thing though.
Answer:
contextual cues about depth
Explanation:
Based on the information provided within the question it seems that the participants' brains are using contextual cues about depth to guide the perception. This can be said because the brain is subconsciously measuring both lines in relationship towards each other as well as various objects around the lines at different depths, which would lead to inaccurate measurements as opposed to comparing the lines together at the same depth perception.
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