Read Text 2 and locate the paragraph in which the author expresses his opinion on this topic. Which statement (a-d) best describes the writer’s stance?
A、a. Paragraphs ❷ and ❸. The technological perspective and the market perspective should be integrated to explain the uneven development of the global wind energy industry.
B、b. Paragraph ❶. The uneven growth of the wind energy industry in different parts of the world cannot easily be explained.
C、c. Paragraph ❺. Technological, economic and political factors can all explain the uneven development of the global wind energy industry.
D、d. Paragraph ❺. The development of the wind energy industry in different countries has been heavily influenced by the efforts of environmental groups.