Answer:
The normal distribution.
Explanation:
The normal distribution -
It is also known as normal curve , the gaussian curve and the bell curve , as the plot obtained is in the shape of a bell .
It is a very widely used distribution in the field of statistics .
This type of distribution is used in the social science and natural sciences , in order to represent the random variables where the distribution is not known .
Hence , from the given information of the question ,
The correct answer is The normal distribution.