What scientific product development challenge is known as the 'Valley of Death' in the commercialization process?

The journey of scientific innovations from laboratory breakthroughs to commercial products involves critical development stages. Understanding this process is essential for product managers, marketers, and entrepreneurs in the scientific equipment and research tools industry. This trivia question tests your knowledge of a key challenge in bringing advanced scientific instruments to market.

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The funding gap between proof-of-concept and commercial viability
The period of regulatory approval where many products fail
The manufacturing scale-up phase where precision is often lost
The market education phase where scientists resist adopting new technologies