The three commonly cited pillars of sustainable development are economic,social and environmental. The environmental dimension focuses on conserving ecosystems and natural resources for present and future generations. The stem mentions balancing economic growth,social inclusion and a third type of protection,which clearly refers to environmental protection. Therefore Option B correctly completes the statement.
Option A:
Technological factors support sustainability but are not the standard “third pillar” alongside economic and social in this framework.
Option B:
Environmental protection is the established third pillar with economic and social dimensions,matching the stem’s wording.
Option C:
Military is not considered a pillar of sustainable development and does not fit the concept described.
Option D:
Purely political issues are important (governance) but the classic three-pillar framing is economic,social and environmental.
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