Why is the 'Submit for Approval' button important in Salesforce?

The 'Submit for Approval' button is crucial in Salesforce because it initiates the approval process for records, allowing users to formally request approvals for changes or new entries in the system. When the button is clicked, it triggers a series of predefined steps defined in the approval process, which may include routing the record to designated approvers, sending notification emails, and establishing criteria that must be met for the approval. This process ensures proper oversight and accountability in organizational workflows, especially for decisions that require higher-level authorization. By initiating the approval process, it empowers users to manage approvals effectively and ensures that decisions are made in line with the organization's policies.

The other choices involve benefits of the approval process but do not capture the primary function of the 'Submit for Approval' button itself, which is to start the approval workflow.