The statement that best explains why the Aztecs used chinampas in their agricultural practices is:
B. the Aztecs used chinampas to reclaim farmland from lake or marshlands and create plots of lands and used chinampas to develop their own.
Chinampas, often referred to as "floating gardens," were an innovative agricultural technique that allowed the Aztecs to maximize their farming potential in the marshy areas around Lake Texcoco. This system enabled them to grow crops effectively and sustain their population.