Multiple choice

Common cold is an infection of

  1. upper respiratory tract

  2. lower respiratory tract

  3. liver

  4. throat
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A Correct answer
Explanation

Common cold (usually caused by viruses) is an infection of the upper respiratory tract. Signs and symptoms include coughing, sore throat, runny nose, sneezing and fever which usually resolve in seven to ten days, with some symptoms lasting up to three weeks. 

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