omprehensive and Detailed Explanation with all Platform App Builder documents: = The correct answer is A. Roll-up Summary.
DreamHouse Realty wants to show the highest value from related Offer records on each Property record. Because the objects have a master-detail relationship, a roll-up summary field is the correct declarative solution.
Salesforce documentation explains that roll-up summary fields calculate values from related detail records and display the result on the master record. Salesforce also lists MAX as the roll-up type used to display the highest value from related records.
B is not a Salesforce field type for this requirement.
C, D, and E are data-entry field types and cannot calculate the highest related Offer value.

The correct answer is B. Use a private sharing model granting record access using hierarchy; manage field access with field-level security.
Cloud Kicks needs two different layers of access control:
First, only the sales rep, their manager, and executives above the manager should view the scorecard record. That is a record-level access requirement. A private sharing model with access opened through the role hierarchy supports this because users above a record owner in the hierarchy can access subordinate-owned records. Salesforce states that the role hierarchy opens access vertically to users higher in the hierarchy.
Second, reps must not see the executive comment fields. That is a field-level access requirement, so it should be handled with field-level security. Salesforce separates record-level access from field-level permissions.
A and C are incorrect because custom settings are not used to grant record access. D includes record types, but record types do not secure individual fields; field-level security is required.

The correct answer is B. Quick action.
Sales reps need to create Opportunity records directly from an Account, with several fields prepopulated. This is an object-specific Quick Action use case. Salesforce states that object-specific actions let users create or update records in the context of a particular object. Salesforce also supports predefined field values for quick actions, which can prepopulate fields and make record creation faster.
Default action is not the correct feature name for this requirement. Custom button and custom link are older navigation-style tools and are not the best Lightning/mobile-friendly option for creating related records with predefined values.

The correct answer is C.
To show Component records as a related list on Product, the app builder should create a relationship field on the child object, Component, pointing to the parent object, Product. Salesforce documentation explains that when a lookup relationship is defined, the lookup field is added on one object and a related list can be shown on the associated object's page layout.
A is unnecessary unless the requirement is many-to-many. B is incorrect because a roll-up summary does not create a related list. D is incorrect because the relationship field direction is wrong; the field should be on Component, not Product.