Final answer:
The cable television company needs to address its customer service issues, notably long wait times, to improve its customer responsiveness and overall public relations.
Step-by-step explanation:
Out of the companies listed, the one most in need of a strategy to improve customer responsiveness is the cable television company with a public relations problem where customers are experiencing long hold times. This issue directly affects customer satisfaction and the company's image in the public eye, which can have immediate and long-term effects on the business. In comparison, while the other companies do face challenges, those are more related to product development, inventory management, and consumer preferences, which do not involve direct customer service improvements.