When a company lengthens a product line by adding more items within that lines current range, they are
product line filling
product line stretching
product mixing
increasing product depth
building product equity

The answer is product line filling.

Explanation:

As said, the strategy involves adding more products to the current range. This is mainly used to,

hi.

i'm not sure about the answer, but, i would say c. *when the recipient was not included on the original email.*

hope this , well if it's right. uwu

merry christmas! ^-^

answer; ///global;