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Scientist: Some colonies of bacteria produce antibiotic molecules called ... ...

Scientist: Some colonies of bacteria produce antibiotic molecules called phenazines, which they use to fend off other bacteria. We hypothesize that phenazines also serve as molecular pipelines that give interior bacteria access to essential nutrients in the environment surrounding the colony.

Which one of the following, if true, provides the most support for the scientist’s hypothesis?

(A) Bacteria colonies that do not produce phenazines form wrinkled surfaces, thus increasing the number of bacteria that are in direct contact with the surrounding environment.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in PT72 (Jun 2014): Logical Reasoning A

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