Directions: The following question has four different sentences. Select the most preferable sentence with respect to grammar, meaning, and usage. If all four sentences are correct or all of them are incorrect, mark option 5" as your answer.

Q:

Select the most appropriate sentence with respect to grammar and usage.

• 1
  Around 64 per cent of land used for agriculture so food crops is at risk of pesticide pollution
• 2
  An erratic monsoon season can damage the economy and affect agricultural practices
• 3
  The intensity of cyclones and hurricanes might increased in the next century due to global warming
• 4
  Robotics develop machines that can substitute for humans and replicate human actions
• 5
  None of the above