Final answer:
Selective attention is influenced by physical properties, response salience, and dynamic properties, but not response certainty.
Step-by-step explanation:
The major influence on selective attention that is not one of the options provided is Response Certainty. Selective attention refers to the process of selectively focusing on certain stimuli while ignoring others. It is influenced by several factors such as physical properties (e.g., color, size, intensity), response salience (e.g., novelty, relevance), and dynamic properties (e.g., motion, change). Response certainty, however, does not play a direct role in selective attention.