Final answer:
In business portfolio analysis, SBUs typically evolve from 'question marks' to 'stars', moving from high market growth but low market share to high market growth and high market share.
Step-by-step explanation:
In its business portfolio analysis, an organization's Strategic Business Units (SBUs) often start as question marks and then become stars, assuming they succeed. A question mark (also known as a problem child) denotes a business with high market growth but a low market share, which requires a lot of cash to become competitive. As it gains market share, it has the potential to become a star, which is an SBU with high market growth and high market share. In the context of the BCG matrix, a business may evolve through these categories based on its performance and market conditions.