Reference and details below.

According to the Salesforce documentation3, the following Salesforce and Health Cloud objects can be used to represent providers and their relationships in a provider management data model:
Contact: A contact is a standard object in Salesforce that stores information about an individual person, such as name, phone, email, address, etc. A contact can be used to represent a provider who is a person, such as a physician, nurse, or therapist3.
Healthcare Practitioner Facility: A healthcare practitioner facility is a custom object in Health Cloud that stores information about the relationship between a provider and a facility where they practice, such as hospital, clinic, or pharmacy. A healthcare practitioner facility can be used to track each of the different locations where a provider practices3.
Healthcare Provider: A healthcare provider is a custom object in Health Cloud that stores information about a provider who is an organization or a group of providers, such as hospital system, clinic network, or physician group3.

According to the Salesforce documentation2, there are two ways to capture consent from enrollees of a care program:
By talking to an agent via phone who then enrolls the patient using the Enroll in Program quick action in Health Cloud2.
By using a self-service portal via a community where the enrollee can view and sign the consent document electronically using DocuSign or Adobe Sign2. Therefore, options C and E are correct. Option A is incorrect, because web chat is not a supported channel for capturing consent in Health Cloud. Option B is incorrect, because email-to-case is not a supported feature for enrolling in a care program. Option D is incorrect, because SMS is not a supported channel for capturing consent in Health Cloud.

Some entities have additional non-FHIR attributes to increase the usability of the data within Salesforce (A), the cardinality of a few attributes has been changed (e.g. in picklist scenarios) (B), and not all attributes in a given FHIR resource may be supported are three options that explain why the new clinical data model in Health Cloud is labeled as FHIR aligned and not FHIR compliant. It does utilize the latest FHIR R4 standards (D), so this is not a reason for being FHIR aligned. It aligns with both FHIR DSTU2 and FHIR R4 specs (E), so this is not a reason for being FHIR aligned either.

FHIR V4 and HL7 V2 are two interoperability standards that are supported by Salesforce to facilitate the exchange of health data32. Option A is incorrect, because EDI ANSI X12 is a standard for exchanging business transactions, not health data. Option C is incorrect, because The Direct Standard is a standard for secure email communication, not health data. Option E is incorrect, because DICOM (Digital Imaging and Communications in Medicine) is a standard for storing and transmitting medical images, not health data.

Health Cloud Foundation
Assigns read access to additional Health Cloud platform capabilities, including the Provider Management data model.
The Health Cloud Provider Network Management permission set grants access to provider management objects so users can manage credentialing and recruiting.
To use the Provider Network Management features of Health Cloud, assign both the Provider Network Management permission set and the Health Cloud permission set to your users Users can access Provider Management standard objects by using Health Cloud, by assigning Health Cloud Platform Permission set licenses, and by assigning Health Cloud Foundation Permission set. Health Cloud is the industry-specific solution that includes Provider Management features such as provider search, provider network management, and provider credentialing3. Health Cloud Platform Permission set licenses grant access to the Health Cloud platform objects and features, including the Provider Management data model4. Health Cloud Foundation Permission set assigns read access to additional Health Cloud platform capabilities, including the Provider Management data model5. Service Cloud is not required to access Provider Management standard objects, and the Provider Permission set is not a standard permission set in Health Cloud.