Suppose It Was Your Job to Assess the Relative Health

Suppose it was your job to assess the relative health of all the old-growth forests in the Pacific Northwest. What might you do to cover all that ground?

A) Put together a big team of scientists to go count species
B) Look for the presence of indicator species or examine satellite photos taken over time
C) Look at the logging records over time
D) Look at the number of ecotourists that are visiting the area
E) There's no way to do this effectively, so you would divide up the territory and look at a few acres at a time.