The governor of a U.S. state would likely not want to cover oceans because they fall under federal jurisdiction and are managed by national agencies. In contrast, wetlands and rivers offer more direct governance opportunities for states. Therefore, the answer is C. oceans .
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The governor of a U.S. state is unlikely to want to manage oceans as an ecosystem due to federal jurisdiction. Other ecosystems like wetlands and rivers have local governance implications, whereas oceans are primarily overseen at the federal level. Understanding jurisdiction helps clarify which ecosystems a governor influences. ;