Growing as large as three meters in diameter, the leaves of the giant Amazonian waterlily feature a complex network of radiating veins that provide structural __________ in thickness from the center to the edges, these veins allow the leaves to maintain their large size and buoyancy with minimal material, optimizing light capture and photosynthesis.
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Verbal·Standard English Conventions·Boundaries
hardWhich choice completes the text so that it conforms to the conventions of Standard English?
A
support decreasing
B
support, while decreasing
C
support, decreasing
D
support. Decreasing