Final answer:
The specific concern of WBTV producer, Josh, about Sarah Batista's story pitch is not given, but typical concerns include the story's relevance, timeliness, impact, resources needed for production, and ethical issues.
Step-by-step explanation:
The main concern of the WBTV producer, Josh, regarding the story pitched by Sarah Batista, is not explicitly specified in the question as it might pertain to a specific scenario or case study that requires additional context.
However, typically, a television producer like Josh might be concerned about various aspects such as the story's relevance to the audience, whether the subject matter is timely, the potential impact of the story, its newsworthiness, the resources required to produce the story, and the ethical considerations involved in reporting it.
Without more context, it's difficult to identify his precise concern, but these factors are often crucial considerations when evaluating a story pitch in the broadcasting industry.