Answer: The correct option is C (expansion of an interstate highway).
Step-by-step explanation:
The National Environmental Policy Act (NEPA) is a law that governs the environmental effects of proposed actions of federal agencies before proceeding to taking any decisions. Then the federal agencies are expected to prepare detailed statements assessing the environmental impact of and alternatives to major federal actions significantly affecting the environment. These statements are commonly referred to as Environmental Impact Statements (EIS). The actions that are covered by the policy includes:
-making decisions on permit applications,
-adopting federal land management actions, and
-constructing highways and other publicly-owned facilities.
Therefore expansion of an interstate highway will require the preparation of an environmental impact statement. I hope this helps. Thanks