Which of these sustainable building materials has the lowest carbon footprint and is made from agricultural waste that would otherwise be burned?

Sustainable architecture has become increasingly important as the building industry works to reduce its environmental footprint. From innovative materials to energy-efficient designs, architects are constantly seeking new ways to create structures that are both beautiful and environmentally responsible. This poll tests your knowledge of breakthrough sustainable materials that are reshaping modern architectural product design and implementation.

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Hempcrete (a biocomposite made of hemp hurds and lime)
Straw bale insulation (compressed agricultural straw)
Rice husk ash concrete (RHA concrete)
Mycelium insulation (fungus-based building material)