An app Builder creates an Account validation rule on the Industry field that will throw an error if the length of the field is longer than 6 characters. Another App Builder creates a workflow rule with a field update that sets the Industry field to Technology whenever the Billing City field is set to San Francisco. What will happen the next time a sales person saves an Account with a Billing City of San Francisco?

Universal Containers uses a private sharing model on Accounts. User A and user B both own Accounts of their own and have both been sent a new account record in an email owned by user C to take a look at. User A is able to open and view the record but user B receives an insufficient privileges error. User A and user B have the same role in the role hierarchy as user.
What are the three reasons user A has access but user B is unable to access the record? Choose 3 answers

DreamHouse Realty wants to make sure an Opportunity has a field Expected_Close_Date_c populated before it is allowed to enter the qualified stage.
How should an app builder solution this request?

Universal Containers would like to collaborate with its customers within Salesforce, and has decided to enable the "Allow Customer Invitations" Chatter setting. What permission is granted to Customers when invited to Chatter Group?

Cloud Kicks asked the app builder to insert a list of 25,000 records using deduplication for the Race_Track__c custom object.
Which tool should be used?