The development and adoption of AI-specific hardware like NVIDIA GPUs and TPUs have been the most critical factor driving recent AI advancements and adoption across sectors. GPUs' parallel processing capabilities have exponentially accelerated training and inference for deep learning models, enabling breakthroughs in industries like healthcare, automotive, and finance. NVIDIA's documentation, including its AI leadership narrative, credits GPU innovation (e.g., A100, DGX systems) for making AI computationally feasible at scale. Option A (frameworks) and Option B (datasets) are vital but depend on hardware to execute efficiently. Option C (investment) supports development but isn't the direct enabler. NVIDIA's role in AI hardware underscores Option D's primacy.