Which of the following is not a valid business process in Salesforce.com?

Which of the following components inherits the record type and profile associations, related lists, fields, and field access settings from its associated page layout?

Once an opportunity reaches the negotiation stage at cloud kicks, The Amount fields becomes required for sales users. Sales managers need to be able to move opportunities inti this stage without knowing the amount.
How should the administrator require this field during the negotiation stage for sales users but allow their managers to make changes?

What should a system administrator consider before importing a set of records into Salesforce.

Is it possible to relate a person account to a contact on a business account.