Explanation

In venture capital financing, seed-stage financing is the earliest stage of funding. It typically supports:

1. Transformation of an idea into a business plan - This is the primary purpose of seed-stage financing
2. Initial market research
3. Prototype development
4. Formation of the founding team

Let's analyze why the other options are incorrect:

Option A (initial commercial production and sales): This describes later-stage financing, typically Series A or Series B rounds, where the company has already developed its product and is ready for commercialization.

Option B (product development and/or marketing efforts): This describes early-stage financing (often Series A), which comes after seed-stage. At this point, the company has a business plan and is ready to develop the actual product.

Option C (transformation of an idea into a business plan): This is the correct answer. Seed-stage financing helps entrepreneurs turn their initial concept into a formal business plan, conduct feasibility studies, and build a prototype if needed.

Venture Capital Financing Stages:

1. Seed Stage: Idea → Business plan
2. Early Stage (Series A): Business plan → Product development
3. Expansion Stage (Series B/C): Product → Commercialization and growth
4. Later Stage (Series D+): Scaling and preparation for exit

Therefore, seed-stage financing most directly supports the transformation of an idea into a business plan, making option C the correct choice.