To find the slope of the arithmetic sequence formed by the number of muffins baked each day, we should look at the difference in the number of muffins baked on consecutive days.
- From day one to day two: \(11 - 5 = 6\)
- From day two to day three: \(17 - 11 = 6\)
The difference in the number of muffins baked each day is constant at \(6\).
Therefore, the slope for this arithmetic sequence is \(6\).
The correct answer is: 6