Nhận biết (M1)

Researchers have used several different methods to determine the population density of cougars (Puma concolor)

A student claims that the use of scat-detecting dogs produces the most precise results, with the smallest difference between minimum and maximum densities.

Which choice best describes data from the table that weaken the student’s claim?

• A.

  David M. Choate et al. reported a density range of 4.65 individuals per 100 square kilometers despite the use of helicopter surveying.

• B.

  Rahel Sollmann et al. reported a density range that was substantially smaller than that reported by David M. Choate et al.

• C.

  Gregory A. Davidson et al. reported a density range greater than that reported by some studies that used other methods.

• D.

  Gregory A. Davidson et al. reported a maximum density of 5.50 individuals per 100 square kilometers, which differed from that reported by some studies that used other methods.