Multiple choice

Directions: The last sentence in the following passages has been deleted. Select the sentence, out of the available options, that best suits the end of the passage. While the lethal H5N1 virus has been marching from one country to another, infecting birds and, in some cases, humans, one fact is becoming apparent - as long as the virus persists in birds, be it poultry or wild birds, avian flu outbreaks are bound to recur.

  1. Preventive measures may actually have helped spread of the virus.

  2. The virus has developed resistance.

  3. A study highlights the ability of ducks to spread more of the virus and for a longer duration without actually falling sick.

  4. Only the time interval between the outbreaks cannot be determined for sure.

  5. Mass vaccination without other stringent control measures may not be the best strategy.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

None, except (4), continues with the flow.

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