Explanation:

🔴 A. Salesforce Social Studio with connectors for managing various social media and messaging platforms
Salesforce Social Studio, part of Marketing Cloud, manages social media interactions (e.g., Twitter, Facebook) but is not designed for WhatsApp Business integration. It focuses on social media monitoring and engagement, not messaging apps like WhatsApp. While it has connectors for social platforms, WhatsApp requires specific API integration (e.g., WhatsApp Business API), which Social Studio doesn’t natively support. This makes it unsuitable for direct WhatsApp communication in a contact center.

Suitability: Not suitable, as Social Studio doesn’t support WhatsApp integration.

🔴 B. Custom Apex code developed to connect Salesforce with the WhatsApp Business API
Custom Apex code can integrate Salesforce with the WhatsApp Business API by calling Meta’s APIs to send/receive messages. This approach allows tailored functionality, like creating cases from chats or sending personalized messages. However, it requires developer expertise, ongoing maintenance, and handling API complexities (e.g., webhooks, authentication). While flexible, it’s not the preferred declarative solution for WhatsApp integration in Salesforce Contact Center, where native tools are prioritized for efficiency and scalability.

Suitability: Viable but less preferred due to complexity and coding requirements.

🟢 C. Flow Builder with pre-built templates for configuring messaging channel interactions and automation
Flow Builder, part of Salesforce Flow, offers pre-built templates to automate messaging interactions, including WhatsApp, via Service Cloud’s Messaging feature. Admins can configure flows to route WhatsApp messages, trigger automated responses (e.g., greetings), or update records based on chats. This declarative tool integrates with the WhatsApp Business API through Salesforce’s Digital Engagement add-on, enabling seamless automation without coding. It’s ideal for contact centers, aligning with exam emphasis on low-code solutions.

Suitability: Highly suitable, as it provides a declarative, scalable solution.

🔴 D. Omni-Channel routing rules directing incoming WhatsApp messages to appropriate agents based on content and skills
Omni-Channel routing rules route incoming WhatsApp messages to agents based on skills or content (e.g., routing urgent messages to senior agents). While critical for managing WhatsApp interactions in a contact center, Omni-Channel relies on Messaging for WhatsApp (enabled via Digital Engagement) to integrate the channel. It facilitates routing, not the core integration or automation of WhatsApp communication, making it a complementary rather than primary tool.

Suitability: Supports routing but not the core integration mechanism.

🟢 Correct Answer: C. Flow Builder with pre-built templates for configuring messaging channel interactions and automation
Reasoning:
Flow Builder is the primary tool for integrating WhatsApp Business with Salesforce Contact Center, using pre-built templates to configure messaging channels via the Digital Engagement add-on. It enables automation (e.g., sending templated responses) and integrates with the WhatsApp Business API declaratively, aligning with Salesforce’s low-code philosophy. For example, a flow can automate greetings or update cases from WhatsApp chats. While Apex (B) is flexible, it’s complex, and Omni-Channel (D) handles routing, not integration. Social Studio (A) is irrelevant for WhatsApp.

References:
👍 Salesforce Trailhead: “WhatsApp Integration with Salesforce” details Flow Builder for messaging automation.
👍 Salesforce Help: “Set Up Messaging for WhatsApp” covers Flow Builder templates for WhatsApp.
👍 Focus on Force: Exam emphasizes declarative tools like Flow for contact center integrations.