Based on the passage, what additional information, if true, would challenge Miller's conclusions about puff adder camouflage?
А
Puff adders are slower than many other snakes.
B
There were a few previously trained dogs in South Africa
at the time of the research.
Meerkats sometimes walk over puff adders without
noticing them.
D
The scent of the puff adder's laboratory habitat is similar
to that of its natural habitat.