Question $15(0\mathrm{.}4$ points$)$

Which of the following is not a requirement for effective market segmentation?

Question $15$ options:

The segment must be large enough to be economically viable.

The segment must be differentiable from others and should respond uniquely to market strategies.

The segment must be measurable in terms of size and purchasing power.

The segment must show varied preferences within its subgroup to allow for further segmentation.

The segment must be accessible through marketing channels.