Which of the following describes 'brand loyalty'?

Brand loyalty refers to the consistent preference of consumers for a particular brand over its competitors, often driven by an emotional connection. This emotional attachment can arise from positive experiences with the brand, trust in its quality, alignment with personal values, or even a sense of community associated with the brand. When customers feel a strong bond with a brand, they are more likely to repeatedly choose that brand's products or services and may also become advocates, promoting the brand to others.

The other options provided do not encapsulate the essence of brand loyalty. Business partnerships with different brands relate more to strategic alliances or collaborations rather than consumer preference. Sales promotions focus on short-term tactics to spur immediate consumer interest but do not establish lasting loyalty. Market share growth could be a result of brand loyalty, but it is more about a measure of the brand's position in the market rather than the loyalty itself. Thus, the emphasis on an emotional connection in the correct answer highlights the core concept of brand loyalty.