QPractice question
Which of the following best describes Brand Extension?
  1. A.Private labels (retailer-owned brands like Costco Kirkland) compete with national brands (P&G, Unilever) on price, quality, and shelf advantage.
  2. B.The four-stage progression — Introduction, Growth, Maturity, Decline — through which most products pass, with different marketing implications at each stage.
  3. C.Length is the number of items in a line; depth is the variants per item. Both decisions trade off range against complexity.
  4. D.Using an established brand to enter a new product category — leverages equity but risks dilution if the extension does not fit. ✓
Why this answer:

Brand Extension is using an established brand to enter a new product category — leverages equity but risks dilution if the extension does not fit. The other options describe related but distinct concepts in Product & Brand — see the deep-dive guide for the full distinction.

How to think about questions like this

Faster and cheaper than building a new brand; risks dilution. Questions like this test whether you can distinguish Brand Extension from neighboring concepts. The most common trap is choosing a closely-related concept that sounds similar but applies in a different context.

When you see a definition question on an exam, do two things: (1) translate the question into your own words, then (2) generate the answer in your own words before reading the options. This avoids the cognitive bias of recognizing a familiar phrase as correct just because it is familiar.

Editor's note Want a deeper walkthrough? Our editors recommend pairing this with Brand Extension for a worked example you can adapt to your assignment.

Underlying concept

Concept · Product & Brand Brand Extension

More practice in Product & Brand Management

Practice · Product & Brand Management Product Life Cycle — Definition Practice Practice · Product & Brand Management Product Life Cycle — Application Practice Practice · Product & Brand Management New Product Development (NPD) — Definition Practice Practice · Product & Brand Management New Product Development (NPD) — Application Practice Practice · Product & Brand Management Product Mix and Product Line — Definition Practice Practice · Product & Brand Management Product Mix and Product Line — Application Practice Practice · Product & Brand Management Product Line Stretching — Definition Practice Practice · Product & Brand Management Product Line Stretching — Application Practice