Difference between formal and informal test​

Formal test and Informal test and both are different from each other vastly. The difference will be discussed in this space to give a clearer idea of what they are. The main difference between these two types of assessment is that an informal one is a type in which there are no requirements of particular grading under the guidelines of the institute. For example, there are many activities that student do in the class and also appear in tests and other groups undertakings which are marked by the teacher but they are not always counted towards the final grade of the student and even if it, there is particular percentage which is added on basis of several activities throughout the academic year. A formal assessment, on the other hand, is the one in which there is a proper criterion set by the teacher or the institute in order to judge the caliber of a student based on particular instructions and questions given in the assessment. In this, a person is checked according to a wider set of rules and with other students on an equal level.

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but i think it is 2

could you put the choices and excert up hun