The correct answer is: A. each variable in one column.
Tidying data is a process of organizing data in a way that makes it easy to understand and analyze. The goal of tidying data is to create a data set that has one variable per column and one observation per row. This makes it easy to see the relationships between the variables and to identify patterns in the data.
Option B is incorrect because it does not specify that each variable must be in its own column. This could lead to confusion, as it would be difficult to tell which
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