Deena, a research student, decides to test the proverb "birds of a feather flock together" as part of her research project. in this scenario, is most likely to be the initial source of deena's idea. practical problems past research scientific theory common sense

The answer is "common sense".

The initial source has to be common sense as idioms are usually metaphorical statements which make sense and relate to the common life.

In nature, birds of a solitary group do in actuality regularly frame groups. Ornithologists clarify this conduct as a 'security in numbers' strategy to diminish the danger of predation. In dialect terms, it was beforehand more typical to allude to birds flying together than flocking together and numerous early references utilize that frame.

given all the practice it takes to become proficient at writing up ncoer's, , awards, and conselings as well as learning how to become a well rounded   leader , and managing different types of people

the secretary of state, appointed by the president with the advice and consent of the senate, is the president's chief foreign affairs adviser. the secretary carries out the president's foreign policies through the state department and the foreign service of the united states.