Which of these innovative materials was specifically developed for architectural use and can absorb carbon dioxide throughout its lifecycle, effectively making buildings carbon-negative?

In the evolving world of architectural product design, sustainability has become a core consideration. Materials that reduce environmental impact while maintaining structural integrity are reshaping how buildings are conceived and constructed. This trivia question focuses on an innovative architectural product that has gained significant attention for its unique properties and applications in modern sustainable building design.

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Self-healing concrete containing bacterial spores
Cross-laminated timber (CLT) with carbon sequestration treatment
Carbicrete - a concrete alternative made using steel slag that cures by absorbing CO2
Transparent aluminum oxide (transparent metal) panels