The best outcome obtained through a Blockchain solution typically involves the need for decentralization, transparency, and immutability of records. Options A, B, and C do not inherently require these properties. Pending financial transactions (option A) generally need a secure and temporary storage, not necessarily a blockchain. A stock market data website (option B) requires accurate and up-to-date information, which does not specifically benefit from blockchain technology. A mobile app for weather information (option C) requires access to reliable data sources, which can be achieved through traditional means. Therefore, the correct answer is none of the above, as none of these scenarios optimally leverage the core benefits of Blockchain technology.