Answer: (D) Petrochemicals
Step-by-step explanation:
The petrochemicals is not the main reason behind the success of gulf coast in the industry. The petrochemicals are mainly used for manufacturing various types of products that include furniture, plastic, electronics appliances and the wind turbines.
The petrochemical are also toxic for the environment as it burn various types of fossil fuels, oil and the natural gas which is harmful for the environment.
Therefore, Option (D) is correct.