To determine how Paragraph 1 contributes to the overall passage, we need to analyze the focus and content of that paragraph. Based on the options provided:
A. If the paragraph provides interesting characteristics of staghorn ferns, then this could be a valid contribution.
B. If it explains how staghorn ferns survive in treetops, then this would explain their ecological niche.
C. If it discusses a variety of plant species coexisting, it might lead to a broader theme of biodiversity.
D. If it emphasizes reliance between different species for survival, then it highlights interdependence in ecosystems.
If Paragraph 1 specifically introduces or explains important aspects of staghorn ferns directly related to their survival and ecological role, then option B would be the most fitting choice. However, without the specific content of Paragraph 1, it's difficult to definitively select one of the options.
Without that content, it's crucial to choose the option that best aligns with the main idea presented in that paragraph. If it primarily focuses on survival strategies, option B would be correct. If it showcases characteristics or relationships, other options might apply.