Answer: The correct answer is "One tenth of a second".
Explanation:
Research has shown that first impressions all over the world are formed as rapid as in a tenth of a second.
This was discovered by two Princeton psychologists named Janine Willis and Alexander Todorov.
They ran a series of experiments in which they discover that people form opinions of other people in regards to their traits and characteristics in incredibly shorts periods.
In this particular case, George will only need one tenth of a second to asses a person's trustworthiness based on a brief exposure to a photo of the person.