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Question :  There are few words missing in the passage given below. The options given contain an answer that will fit in those given blanks. Pick up the correct word to be used to make the sentence coherent and grammatically correct.

The Global maize production across the world is worth billions of dollars annually and is a major contributing factor to global food security because it’s a 1) ______________ food for billions of people. Majority of the maize production depends on natural rainfall, making it 2) ______________ to variable rainfall patterns.

This limitation is likely to get intense in the future as it is anticipated that the climate change is going to lower rainfall in many regions of the world. This could decrease 3) ______________ by 10% by the time global temperature has risen by 4º C.  Another challenge of droughts are also likely to become more 4) ______________ and severe. The increase in temperatures are also predicted for many parts of the world which will  have direct effects on the productivity and growth of maize. High temprature will also lead to more 5) ______________, which means that plants lose more water.

Choose the correct word to be used in blank 2.

Option 1: vulnerable
 

Option 2: nefarious
 

Option 3: condemn
 

Option 4: tacit