What term describes Martha's Maid Service's strategy to expand into new areas such as office cleaning and recycling?

The correct answer describes a strategy where a business expands its range of products or services into new areas that are related but still distinct from its current offerings. In this context, Martha's Maid Service is not just focusing on increasing its market share within the existing maid service sector but is branching out into related services like office cleaning and recycling. This approach allows the company to leverage its existing capabilities while targeting new customer segments that may benefit from services surrounding cleaning.

Concentric diversification specifically refers to this type of strategy, where a business looks to introduce new products or services that complement its current operations. It enhances the overall value proposition to customers and can create synergy within the company as it expands its reach while remaining closely aligned to its core competencies.