Direction: Some words have been left out in the following passage. Read the passage carefully and choose the correct answer for the given blank out of the four alternatives:

The Union Cabinet has cleared a ₹17,490-crore National Green Hydrogen (NGH) mission that [1] __________  to [2] __________  the production of hydrogen from renewable energy. Hydrogen is an essential industrial fuel that has a range of uses, from producing ammonia and making steel and cement to powering fuel cells that can run buses and cars. However, the [3]___________  way to manufacture this is to rely on fossil fuels such as coal and natural gas, and this produces carbon emissions. The concerns over global warming and the gradual but steady [4] __________  of alternative fuels have stoked the world’s interest in producing hydrogen from renewable energy sources such as solar and wind energy. This, however, is relatively [5] __________.