|Question 9Verbal

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Studies of the population density of cougars (Puma concolor) have yielded a range of results, which may in part reflect differences in the effectiveness of the methods that researchers have used in their studies. For example, the difference between the maximum population density reported by Ross Clarke and that reported by David M. Choate et al. might be artificially large if the use of ______
Which choice most effectively uses data from the table to complete the example?
helicopter surveying underestimates the density of cougars.
A
helicopter surveying is more common in Utah than the use of radio-collar tracking is.
B
radio-collar tracking underestimates the density of cougars.
C
radio-collar tracking is impractical outside of British Columbia.
D