Which of the following is a benefit of natural barriers in coastal management?

Natural barriers in coastal management, such as sand dunes, mangroves, and coral reefs, play a vital role in enhancing biodiversity and habitat protection. These ecosystems provide essential services and shelter for a wide variety of marine and terrestrial species. The presence of natural barriers contributes to the overall health of the coastal environment by stabilizing shorelines, reducing erosion, and serving as nurseries for fish and other wildlife.

Moreover, these natural systems can absorb wave energy and filter pollutants, creating a more resilient coastal ecosystem. By supporting diverse flora and fauna, natural barriers help maintain ecological balance and promote the overall sustainability of coastal regions. The preservation of such habitats is crucial for protecting biodiversity, as well as for the communities that depend on these ecosystems for livelihood and recreation.

In contrast, options that suggest expensive maintenance or the ability to easily relocate barriers highlight challenges and limitations rather than benefits. The idea of promoting urban expansion does not align with the protective and sustainable nature of natural barriers, which are intended to conserve and protect rather than encourage development.