PT 47 S2 Q24

Until recently, biologists were unable to explain the fact that pathogens—disease-causing ... ...

Which one of the following most accurately describes the organization of the passage?
(A) introduction of a scientific anomaly; presentation of an explanation for the anomaly; mention of an implication of the explanation; discussion of two examples illustrating the implication; discussion of exceptions to the implication
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Practice Set: Science & Technology Mix 1