A.Randolph’s conclusion is not correct. If the correlation coefficient is 0, there is not a linear relationship, but there could be another type of relationship.
Explanation
A value of 0 for a correlation coefficient would mean there is no association between the two variables in the test. A value greater than zero would mean a positive correlation when a rise in the values of one variable mean a rise in the value of the other variable.
If you use a mixture of formats in a single document, it can be confusing to the reader. This is the exact opposite of what formatting is supposed to do.
Answer: c. Each line of the document has different formatting applied to it.