प्रमुख अवसंरचना परियोजनाओं की स्थापना से पहले, नियामक प्राधिकरण संभावित पर्यावरण परिणामों के व्यवस्थित अध्ययन की मांग करते हैं। नीति निर्माण में पर्यावरण प्रभाव आकलन (EIA) का मुख्य उद्देश्य क्या है?

What is the primary function of Environmental Impact Assessments (EIAs) within the regulatory framework of wildlife conservation?

With reference to the Environmental Impact Assessment (EIA) Notification, 2006, consider the following statements: I. Projects listed in the Schedule require prior environmental clearance before commencement of construction work or preparation of land, except for the securing of land. II. Every Category B project is required, without exception, to undergo screening, scoping, public consultation and appraisal. III. In the absence of duly constituted State-level environmental clearance authorities, a Category B project is to be treated as a Category A project. Which of the statements given above are correct?