Directions : In these questions , a part of the sentence is given in bold . Below are given alternatives to the bold part at (A) , (B) and (C) which may improve the sentence . Choose the correct alternative . In case no improvement is needed you answer is (D ) .

Q:

Water and soil pollutants find their entry into the body through ingestion of contaminated water or food.

• 1
  injection of contaminated
• 2
  No improvement
• 3
  digestion of contaminated
• 4
  passage of contaminated