Use the Following to Answer Questions

question 3

Multiple Choice

Use the following to answer questions
Scenario I
A psychologist interested in studying visual perception manipulates the brightness of a light in the imperceptible to very dim range.Each level of brightness (measured in lumens) is studied for 10 trials,and on each trial participants are asked if they can detect the light.Figure 4.1 shows hypothetical data from one participant.
Figure 4.1
-(Scenario I) In Figure 4.1,the absolute threshold of light perception is indicated by the letter:

• A)a.
• B)b.
• C)c.
• D)d.

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