A.I. Explanation:

Option 1: "To increase production efficiency"

Explanation: This option is incorrect because the text does not mention increasing production efficiency as a goal of EcoTech Industries' environmental policy. Instead, the focus is on sustainability, waste reduction, and recycling. Therefore, this option does not align with the main idea of the text.

Option 2: "To reduce carbon emissions by 50% in five years"

Explanation: This option is correct as the text explicitly states that EcoTech is investing in renewable energy with the aim of cutting carbon emissions by 50% over the next five years. This aligns directly with the primary aim of their environmental policy, which is to promote sustainability and reduce environmental impact.

Option 3: "To offer competitive prices to customers"

Explanation: This option is incorrect because the text does not discuss pricing strategies or competitive pricing as part of EcoTech's environmental policy. The focus is solely on sustainability efforts, making this option irrelevant to the main theme of the text.

Option 4: "To expand the company's market share"

Explanation: This option is incorrect as the text does not mention market share expansion as a goal of the environmental policy. The emphasis is on sustainability practices, such as reducing waste and carbon emissions, rather than on business growth strategies.