Very low birthweight is defined by the World Health Organization ...

[xclash]

Very low birthweight is defined by the World Health Organization as
 
  below 2 pounds 3 ounces.
  between 4 pounds 5 ounces and 5 pounds 5 ounces.
  between 3 pounds 5 ounces and 4 pounds 5 ounces.
  between 2 pounds 4 ounces and 3 pounds 5 ounces.

Question 2

Which of the following statements best summarizes the incidence of low-birthweight births since the middle of the twentieth century?
 
  The rate of low-birthweight births peaked in the 1960s and has declined
  steadily since.
  The rate of low-birthweight births reached a low in 1990 and rose in the first
  decade of the twenty-first century.
  The rate of low-birthweight births peaked in the 1990s and has been
  declining since.
  Low-birthweight births were rare until the 1970s but have been increasing
  steadily since then.

[blazinlyss]

Answer to Question 1

between 2 pounds 4 ounces and 3 pounds 5 ounces.

Answer to Question 2

The rate of low-birthweight births reached a low in 1990 and rose in the first
decade of the twenty-first century.

[xclash]

Thanks for the timely response, appreciate it

[AngeliqueG]

Gracias!