The correct answer is option 3: Wind energy. Suzlon is a well-known company that is primarily engaged in the production of wind energy solutions. Wind energy is a renewable source of energy that uses wind turbines to convert the kinetic energy of the wind into electricity. Suzlon specializes in the manufacturing, installation, and servicing of wind turbines for various customers across the globe. The company is known for its expertise in the design and construction of wind farms, which are large installations of multiple wind turbines that generate significant amounts of electricity. Suzlon`s focus on wind energy aligns with the global shift towards clean and sustainable energy sources, as wind power helps reduce greenhouse gas emissions and dependence on fossil fuels. Therefore, option 3 is the correct answer.