A manager wants to calculate the number of days an account has been last contacted through mail. Which field should be used to achieve this?

A sales manager at Cloud Kicks wants the team to spend more time in the field and less time manually entering the information found on the business cards they collect.
What should an app builder do to help achieve this goal without sacrificing data quality?

Which two places can an app builder go to see a list of available Custom Lightning components in their org?
Choose 2 answers

An app builder has been asked to provide users a way to identify a contact's "preferred contact method" directly on the contact record. users need to be able to identify whether a phone number or an email, is the contact's preferred communication method. Which field type will allow the app builder to accomplish this with the fewest fields possible?

The appraisal team at DreamHouse Realty wants to leverage Salesforce mobile app.
What are three things an app builder should do to optimize mobile experience?
Choose 3 answers