The correct answer is the drive theory of motivation.
The drive theory of motivation states that individuals are motivated to perform certain actions and behaviors in order to fulfill desires and urges that are inborn and important for our survival. According to this theory, the reduction of our drives (urges) is what underlies motivation. For instance, we are motivated to obtain food in order to fulfill our biologically inborn drive of hunger.
Depends on the incident.
You can apply it to people doing nothing in a serious situation, and I highly doubt people would come forward if this effect were enacted. The way it works is we become so desensitized to such actions we don't feel it is important to do anything about it or report it.
Answer is Problems remembering things
Reason - lower testosterone levels contribute to affected memory.
Military conflict in and around the middle east