|Question 11Verbal

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Water flowing around an obstruction creates vortices (swirls) that vary in size with the obstruction's size and position, and fish sense these vortices to navigate around the obstructions. Using models of three fish-head shapes-narrow (low ratio of width to length), intermediate, and wide (high ratio of width to length)- Yuzo R. Yanagisuru, Otar Akanyeti, and James C. Liao showed that as vortex size increases, pressure fluctuations at the snout increase for narrow-headed fish but remain low for wide-headed fish. A second research team has therefore hypothesized that in low visibility, a fish will be more likely to avoid an obstruction when the associated pressure fluctuations at the fish's snout are greater.
Which finding, if true, would most directly support the second research team's hypothesis?
A study using obstructions that created large vortices in low-visibility conditions found that some specimens of the narrow-headed flat needlefish (Ablennes hians) bumped into the obstructions more often than other specimens of the same fish did.
A
A study using obstructions that created large vortices in low-visibility conditions found that the narrow-headed flat needlefish (Ablennes hians) bumped into the obstructions just as often as the wide-headed devil catfish (Bagarius bagarius) did.
B
A study using obstructions that created large vortices in low-visibility conditions found that the wide-headed devil catfish (Bagarius bagarius) bumped into obstructions more often than the narrow-headed flat needlefish (Ablennes hians) did.
C
A study using obstructions that created large vortices in low-visibility conditions found that the devil catfish (Bagarius bagarius), which has a relatively wide head, bumped into more than half of the obstructions.
D