Final answer:
Bebbington emphasizes the strategic orientations of activist organizations, highlighting the approaches they take in their campaigns against extractive industry projects.
Step-by-step explanation:
The distinction or nuance about activist organizations opposing extractive industry projects that Bebbington wants to emphasize on page 18 is their strategic orientations. He underscores the way these organizations approach their activism, including how they form coalitions, select issues to highlight, and decide on particular actions to take in the context of political and environmental landscapes. Bebbington may illustrate these orientations by analyzing how activist groups allocate their resources, whether they join forces with other groups including those with opposing views for a common cause, and the strategies they adopt to influence policy and public opinion.