100 Million Farmers: The 100 Million Farmers initiative, launched by The World Economic Forum (WEF), seeks to drive a global movement focused on accelerating the adoption of regenerative agriculture and climate adaptation practices at the farm level. This initiative aims to transition towards sustainable food and water systems. It focuses on achieving net-zero carbon emissions, enhancing nature positivity, and improving farmers' resilience to climate change and market fluctuations.

Let's look at why the other options are incorrect:

•  Option B: This describes organizations promoting organic animal husbandry, not the '100 Million Farmers' initiative.

•  Option C: This refers to a blockchain-based platform for fertilizer trading, which is not the core focus of '100 Million Farmers.'

•  Option D: While farmer collectives are important, '100 Million Farmers has a broader scope encompassing sustainable practices and climate resilience.