Read the following passage and mark the letter A, B, or D to choose the word or phrase that best fits each of the numbered blanks.

Endangered species face a number of challenges that threaten their survival. Firstly, habitat destruction, (21) deforestation and urbanisation, poses a significant threat to many species. Additionally, pollution and climate change have detrimental effects on ecosystems, (22). Moreover, illegal hunting and poaching contribute to declining populations of endangered animals worldwide. These threats not only jeopardise the survival of individual species (23). Therefore, concerted efforts are needed to address the root causes of endangerment and (24). Governments, conservation organisations, and individuals must work together to protect endangered species and their habitats. By preserving natural habitats, combating illegal wildlife trade, and raising awareness, we can safeguard the future of these magnificent creatures and ensure (25).

(21) deforestation and urbanisation, poses a significant threat to many species