Final answer:
The correct answer is option B. Who consumes the products produced?
Step-by-step explanation:
In a modern economy, which consumers will consume the products produced is not an economic decision. This is because the consumers themselves determine their own consumption based on their preferences and ability to purchase the products.
The other three options - what will be produced, where will the products be consumed, and how will we produce the products - are all economic decisions that are made to allocate scarce resources efficiently.