Final answer:
Two-way communication between businesses and customers is facilitated most effectively through social media, enabling real-time interactions and feedback that other methods cannot match.
Step-by-step explanation:
Two-way communication between businesses and customers becomes easier by using social media. Platforms such as F_cebook and T_itter have revolutionized how we interact and influence purchasing decisions. Unlike traditional methods such as product placement, viral marketing, or mobile marketing, social media allows for real-time interactions and feedback, creating a dynamic conversation between companies and consumers. This interactivity is not only limited to personal social circles but extends to how individuals engage with brands, influence each other's choices, and actively participate in the branding and marketing process.