Aaron uses the emotional display in his mother's face to judge the situation and went to the mother to pick him since she was all smiling. Aaron is demonstrating social referencing. Infant start using this from when they are about 8 months old.
The correct answer is "prediction models". Political scientists have developed prediction models that help to clear doubts about the veracity of the presidential elections. This tool takes into account economic and sociological factors as well as public opinions to predict who is the winner in upcoming presidential elections.