Fill in the blank with the correct word. This will create ______ problems for Assam, which already fears being swamped by Bangladeshis.

The meanings of the words are: Horrendous=> Unpleasant Intimidating=> Menacing Criticizing=> Finding faults with Primordial=> Fundamental The correct adjective for 'problems' is 'horrendous' here. Thus option 1 is the correct answer.