Which statement about body mass index (BMI) is true? a:It determines the number of calories one should be eating each day.

b:It is a way to assess body size, taking height and weight into account.

c:It is a way to assess body size based solely on age.

d:It determines one's overall health.

Which barrier to economic development is shown in the following examples? i. the high rate of hiv infection in underdeveloped nations ii. the use of children as soldiers in uganda’s army in the early 2000s iii. low literacy rates in underdeveloped nations with limited exposure to adequate education a. foreign debt b. political instability c. widespread disease d. low levels of social welfare