b) Extending the B2C Commerce storefront to trigger emails via Marketing Cloud's journey REST APIs allows the customer to send triggered emails based on customer behavior on the storefront, such as signing up, placing an order, or abandoning a cart. The REST APIs can also pass data attributes, such as order details or personalization information, to Marketing Cloud. D. Copying and pasting the Collect Script within the head or body in the website template allows the customer to track customer behavior on the storefront using Marketing Cloud's Web & Mobile Analytics feature. The Collect Script can also capture customer attributes, such as email address or contact key, and send them to Marketing Cloud. E. Updating order.export custom object in B2C Commerce with the Marketing Cloud object data extension allows the customer to map order data from B2C Commerce to Marketing Cloud using a point-and-click configuration in Business Manager. This enables order data synchronization between B2C Commerce and Marketing Cloud. Reference: https://developer.salesforce.com/docs/commerce/sfra/marketing-cloud/marketing-cloud-integration https://developer.salesforce.com/docs/commerce/sfra/marketing-cloud/transactional-messaging-api https://help.salesforce.com/s/articleView?id=sf.mc_pb_web_and_mobile_analytics.htm&type=5 https://help.salesforce.com/s/articleView?id=sf.mc_co_data_integration_with_commerce_cloud.htm&type=5

The fieldMapping custom settings in Service Cloud define how the attributes from the Commerce Profile are mapped to the fields on the Service Contact. If the nationalParks attribute was not mapped, then the service agent would not be able to see or update it in the Service Cloud console. References: https://help.salesforce.
com/s/articleView?id=sf.b2c_service_cloud_connector_field_mapping.htm&type=5

Option D is correct because B2C Commerce creates a customer ID when a customer registers an account before making their first purchase, but the primary record should be created through Service Cloud using an external ID field that matches the customer ID from B2C Commerce. This way, Service Cloud can store additional customer information and provide a single source of truth for customer data across multiple Salesforce clouds.
Option A is incorrect because Service Cloud does not create a customer ID when a customer registers an account on B2C Commerce, nor does it create an additional ID to be used as the primary record. Service Cloud uses an external ID field that matches the customer ID from B2C Commerce to create or update customer records.
Option B is incorrect because B2C Commerce does not create an additional ID to be used as the primary record when a customer registers an account. B2C Commerce only creates a customer ID that can be matched with an external ID field in Service Cloud or other Salesforce clouds.
Option C is incorrect because Marketing Cloud does not create a customer ID when a customer registers an account on B2C Commerce, nor does it create a primary ID that should be used by other Salesforce clouds. Marketing Cloud uses subscriber keys that can be mapped to customer IDs from B2C Commerce or other external systems.
Reference:
Get Started with B2C Solution Architect Cert Prep - Trailhead
Certification - B2C Solution Architect - Trailhead

Option A is correct because the ability to change designs may affect the choice of survey tools and platforms, as well as the level of customization and maintenance required.
Option C is correct because the volume of survey responses may impact the performance, scalability, and reliability of the survey solution, as well as the data storage and integration requirements.
Option E is correct because the frequency of updating surveys may influence the design and governance of the survey solution, as well as the change management and testing processes.
Option B is incorrect because front-end development capabilities are not relevant to the survey requirements, but rather to the implementation details and skills of the team.
Option D is incorrect because the number of possible answers for a survey question is not a critical factor for designing a multi-cloud solution, but rather a minor detail that can be easily accommodated by most survey tools.
Reference:
Certification - B2C Solution Architect - Trailhead
Study for the B2C Solution Architect Certification | Salesforce - Trailhead B2C Solution Architect Certification Guide | Salesforce Ben