I studied this a while back, the answer is B.
This was also known as the <em>sistema</em><em> de </em><em>castas</em>. This was based on the purity of bloodline also called <em>limpieza</em><span><em> de sangre</em>. The following groups were arranged according to the purity of blood and race mixtures based on the Spaniard's category known as </span><span>mestizaje</span>.
According to this, the whiter skin has more political, economic and social opportunities than the darker colored people.
These are some of the groups arranged in a descending manner from Spaniards, castizos, <span>Moriscos, mestizos</span><span>, </span>mulattoes, Indians, and Africans. The highest according to them are the groups of the Spaniards.
The correct answer is option B "Offering aid to developing countries". International organizations such as United Nations Children’s Fund (UNICEF), United Nations Development Program (UNDP) and Oxfam offer help to developing countries by destining funds to populations in risk. These organizations not only help by giving money to the developing countries, they help by fighting oppression, slavery, discrimination and other social issues.