The detection of stimuli involves decision processes as well as sensory processes,which are both influenced by a variety of factors besides stimulus intensity.Which of the following reflects this fact

A)  subliminal perception
B)  signal-detection theory 
C)  sensory adaptation
D)  Weber's law

Signal-detection theory accounts for the fact that detection of stimuli involves both sensory processes (i.e. sensitivity to the stimulus) as well as decision processes (i.e. making a judgment about whether the stimulus is present or not), and that these processes can be influenced by factors such as motivation, expectation, and past experience. Subliminal perception and sensory adaptation refer specifically to the sensory processing of stimuli, while Weber's law describes a specific principle relating to the perceived difference between two stimuli.