PT 29 S2 Q19

Scientists have long known that the soft surface of the bill of the platypus ... ...

Which one of the following strategies is most similar to Scheich's experimental strategy as it is described in the passage?
(A) To determine the mating habits of birds, a biologist places decoys near the birds' nests that resemble the birds and emit bird calls.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Practice Set: Science & Technology Mix 2