Final answer:
The Dyson hairdryer situation corresponds to the 'Question marks' category on the BCG matrix due to its rising sales and heavy investment to gain a larger market share in a growing market.
Step-by-step explanation:
The Dyson hairdryer's scenario, with sales steadily increasing and the company investing heavily to grow their market share and secure better distribution channels, describes the 'Question marks' quadrant of the Boston Consulting Group (BCG) matrix. This category includes products that operate in high growth markets but do not yet maintain a high market share. In this phase, a business usually has to invest heavily to increase the product's market share, with the potential to become a 'Star' if successful or a 'Dog' if unsuccessful.