Suppose that a researcher is investigating attitudes toward the preservation of natural habitats, and the survey includes a battery of life style questions, many attitude questions on wildlife and habitat preservation, extensive demographics, plus many opinion questions on specific state parks, national parks, public lands, and recreational areas. The questionnaire takes 60 minutes to complete when self-administered, and 90 minutes to complete when administered by an interviewer. What are some obstacles the researcher might face in conducting this survey? Describe some creative approaches that can be used to overcome the obstacles mentioned.