Why is it sometimes helpful to break down portfolio categories or segments into sub-categories?

Question

Options

• ATo evaluate the benefits expected from each change initiative
• BTo produce a ranked list of strategic changes, taking into account impact across the business
• CTo assess the contribution of initiatives by expressing strategic objectives in greater detail
• DTo ensure business cases are prepared on a consistent basis

• A
  3% (1)
• B
  3% (1)
• C
  85% (29)
• D
  9% (3)

Explanation

Breaking portfolio categories into sub-categories allows organisations to express their strategic objectives in finer detail, making it possible to assess exactly how much each initiative contributes to a specific goal - which is why C is correct. Without that granularity, initiatives that partially overlap multiple broad categories appear indistinguishable in terms of strategic alignment.

Why the distractors are wrong:

• A describes benefits realisation or initiative evaluation, a separate management activity unrelated to the categorisation structure itself.
• B describes portfolio prioritisation/ranking - a valid portfolio technique, but one that follows categorisation rather than being its purpose.
• D relates to business case governance and consistency standards, which is a quality-control concern, not a reason to sub-divide categories.

Memory tip: Think of sub-categories as a zoom lens on strategy - you break things down to see strategic objectives more clearly, so you can measure each initiative's contribution with precision. The keyword in C is "greater detail", which maps directly to the act of sub-dividing.

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