As compared to the rest of the children in the world, the children in Costa Rica are very literate. The correct option among all the options that are given in the question is the first option.The education system of the country of Costa Rica remained free for all the citizens since the year 1869. I hope it helps you.
Star clusters are groups of stars which are gravitation-ally bound. Two distinct types of star cluster can be distinguished: globular clusters are tight groups of hundreds of thousands of very old stars, while open clusters generally contain less than a few hundred members, and are often very young.
Binary system: a system in which information can be expressed by combinations of the digits 0 and 1. to represent codes and data. Since zeros and ones can be easily represented by two voltages, the binary system is the foundation on which digital technology is built. Every digital computer whether a pocket calculator or a mainframe uses the same binary notation.
