In the following question, two columns are given, containing three phrases each. A phrase from the first column may or may not connect with a phrase from the second column to make a grammatically and contextually correct sentence. There are five options, four of which display the sequence(s) in which the phrases can be joined to form a correct sentence. If none of the phrases make a correct sentence, mark ‘None of these’ as your answer.

Column 1	Column 2
A. Wildlife species will die out and natural ecosystems collapse in the near future	D. as the seas have already warmed to an unprecedented extent.
B. Catastrophe could strike this decade for some species	E. if the climate crisis goes unchecked.
C. Ocean ecosystems will be first hit,	F. as key temperature thresholds are crossed.