Denta Clean's decision to add a whitening toothpaste to its current line of toothpastes is an example of product line _ _.
A) mixing
B) stretching
C) filling
D) widening
E) strengthening

Question

Quizplus · Accepted Answer

Product line filling involves adding more items within the present range of the line, such as adding a whitening toothpaste to an existing line of toothpastes.

Denta Clean's Decision to Add a Whitening Toothpaste to Its