Which of the following predicts how and when one will detect the presence of weak stimuli amidst background noise
a. weber’s theory
b. absolute threshold
c. weber’s law
d. signal detection theory

The correct answer is letter D.

Signal Detection Theory is the process in which one can detect the presence of weak stimuli amidst background noise. This is how organisms distinguish between information bearing patterns and random patterns that certain information or stimulus brings. 

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