The correct answer is A.
The richest and poorest quintiles represent the 20% richest and 20% poorest share of a country's population respectively.
The fertility rate is defined as the average number of children to be born during the lifetime of a fertile woman.
The women from Colombia who comprise the poorest quintile in Colombia have reduced their total fertility rate from 5.2 to 4.4 between 1995 and 2000. Therefore the data presented evidences that poor women in Colombia are having almost one fewer child per person between those years.