AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
Option C — Buying up existing local companies and then expanding production is the most significant route, as stated in the textbook.
Source: Interlinking Production Across Countries, Chapter 4
The textbook explicitly states: "the most common route for MNC investments is to buy up local companies and then to expand production." Examiners expect you to identify Option C and may ask you to justify it briefly using this line. Other options (joint production, placing orders) are mentioned but described as less common methods.