A sample consisting of
More than
Between
Since the sample included adults who own televisions and not just those who use their televisions to watch nature shows, no conclusion can be made.
Since the sample did not include all the people who watch nature shows, no conclusion can be made.
Choice B is correct. It's given that based on a sample selected at random, it's estimated that
Choice A is incorrect and may result from conceptual errors.
Choice C is incorrect. To make a plausible conclusion about all adults who own televisions, the sample must be selected at random from all adults who own televisions, not just those who use their televisions to watch nature shows.
Choice D is incorrect. Since the sample was selected at random from all adults who own televisions, a plausible conclusion can be made about all adults who own televisions.