The principle "From each according to his capacity, to each according to his needs" is associated with communism. Communism is a socio-economic system where the means of production (such as factories and natural resources) are owned by the community as a whole, and the distribution of resources is based on the principle of equality. In this system, each individual contributes to society according to their ability or capacity, and in return, they receive goods and services according to their needs. This principle is meant to ensure fairness, as it aims to eliminate social and economic inequalities. However, it is important to note that while this principle is associated with communism, it does not mean that all communist systems have successfully achieved this ideal. Alert - correct answer should be option- 3 Communism.