What type of marketing effort can help retailers reach specific customer groups?

Targeted marketing campaigns are designed to focus on specific customer groups, effectively honing in on their particular interests, preferences, and behaviors. This approach uses data analytics to segment the market, allowing retailers to create personalized messages and promotions that resonate more deeply with their intended audience. By understanding the demographics, needs, and purchasing patterns of specific segments, targeted marketing campaigns can lead to higher engagement and conversion rates.

In contrast, general advertising and mass marketing take a broader approach, which may reach a wide audience but often lacks the personalization and relevance that targeted campaigns provide. This broad strategy can dilute the message, making it less effective for specific customer groups. Celebrity endorsements, while they can enhance brand visibility, do not inherently focus on specific segments or tailor their messaging to distinct customer needs, making them less effective as a targeted marketing strategy. Therefore, targeted marketing campaigns stand out as the most effective method for reaching specific customer groups among the options provided.