पर्यावरण प्रभाव आकलन (EIA) में संदर्भ शर्तों (Terms of Reference - ToR) के मुख्य उद्देश्य को निम्नलिखित में से कौन-सा सबसे अच्छी तरह स्पष्ट करता 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?