Archaeological investigations of ancient Maya wetland agriculture in Belize have revealed extensive networks of modified drainage canals. These complex raised-field systems, constructed by excavating channels through flood-prone bajos to create elevated planting platforms, substantial agricultural surplus during periods of severe population density.
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Verbal·Standard English Conventions·Form, Structure, and Sense
easyWhich choice completes the text so that it conforms to the conventions of Standard English?
A
provided
B
providing
C
to provide
D
having provided