When you delete an object related to a junction object by a lookup relationship, the junction object remains, but the lookup relationship field is cleared.

B.

When you delete an object that is related to a junction object by a lookup relationship, the effect on the junction object and its related records depends on the type of relationship that exists between them.

A junction object is an object that serves as a connector between two objects in a many-to-many relationship. It contains two lookup relationships that link to the objects in the relationship. Deleting one of the objects can affect the junction object and its related records in the following ways:

A. The junction object is deleted: If the lookup relationship between the object and the junction object is set to "Cascade Delete," deleting the object will delete the junction object and all its related records. This is because the cascade delete rule specifies that when the parent record is deleted, all child records associated with that parent record are also deleted.

B. The related fields in the junction object are deleted: If the lookup relationship between the object and the junction object is set to "Clear the value of this field," deleting the object will only clear the related fields in the junction object. This means that the related records in the junction object will still exist, but the lookup fields that point to the deleted object will be blank.

C. The master records are deleted: If the lookup relationship between the object and the junction object is set to "Restrict Delete," you cannot delete the object until you remove its relationship from the junction object. If you attempt to delete the object without removing its relationship, you will receive an error message. This rule prevents the deletion of the parent record when it is being referenced by a child record.

D. The intersection object is deleted: This option is not applicable in this scenario. There is no intersection object involved in a lookup relationship between an object and a junction object.

In summary, the effect on the junction object and its related records depends on the type of relationship between the object and the junction object. If the lookup relationship is set to "Cascade Delete," the junction object and its related records are deleted. If the relationship is set to "Clear the value of this field," the related fields in the junction object are cleared. If the relationship is set to "Restrict Delete," the object cannot be deleted until the relationship is removed from the junction object.