Explanation:

Recently, the updated Groundswell report released by the World Bank indicated that climate change could force 216 million people across six world regions to move within their countries by 2050.

• Hotspots of internal climate migration can emerge as early as 2030 and continue to spread and intensify by 2050.

About the Report

• First Groundswell Report: It was published in 2018 and used a robust and novel modeling approach to understand the scale, trajectory, and spatial patterns of future climate migration within countries, with a focus on three regions: Sub-Saharan Africa, South Asia, and Latin America.
• Second Groundswell Report: It builds on the first report, applying the same approach to three new regions: the Middle East and North Africa, East Asia and the Pacific, and Eastern Europe and Central Asia. 
• Qualitative analyses of climate-related mobility in countries of the Mashreq (i.e eastern part of the Arab World) and in Small Island Developing States (SIDS) are also provided.

Hence option 1st is correct.