LONDON, May 9.— Cuba is ranked first among Latin American countries in providing adequate support to mothers, followed by Argentina and Uruguay, according to a report by the non-governmental agency Save the Children.

The study takes into consideration a series of factors such as health care, as well as the educational and economic level of mothers. The well-being of children is measured by indicators such as infant morality rates and the percentage lacking adequate nutrition.

The lowest ranking countries in the region are Nicaragua, number 49; Honduras, 60th, and Guatemala, 68th, according to the report which evaluated conditions facing mothers in 165 nations, according to PL.

On the other hand, the best country in the world in which to be a mother is Norway, followed by Iceland and Sweden, as well as Australia and Canada.

The report indicated that in much of Sub-Saharan Africa conditions facing mothers and children are deplorable. It is estimated that women there have a life expectancy of 56 years, that one in 16 dies as a result of complications associated with pregnancy and that only 5% use modern contraceptives, while one of every three children suffers from malnutrition.

Save the Children emphasized that breastfeeding alone could prevent a million infant deaths a year, although less than 40% of babies in developed countries are breastfed, according to the Argentine Télam news agency.