Check the attached file for the answer.
Answer: B) Yes, especially if the people who are on a do dash not dash call registry have a trait that is not accurately represented by the remaining people in the sample
If the person conducting the survey wants a good random sample then they should take opinions from a broad audience, including people from different backgrounds, races, ages, cultures etc. In this case, the people that are not on the call registry most likely have a common trait that would explain why they're not in there (ie. they're too young to be eligible to be in the call registry, they are too old to be on the call registry, etc). Not calling them then would throw off the sample. Because of this, B is the correct answer.
Answer:
the Hand over Hand steering technique
Geographic isolation could be caused by a number of environmental factors. If a population of people or species live on an island, amongst mountains, in difficult to navigate terrain, or deep into rainforest or forests generally these groups could experience geographic isolation. Geographic largely occurs if a population or group of people or animals live in a remote region of the world that has little access to others due to any number of geographic features.
