To enable sales managers to approve sales quote proposals by email and from a mobile device, you need to add an Approve/Reject step to the case life cycle and enable email and mobile approval. This option allows sales managers to approve or reject the proposal by replying to an email message or by using a mobile app. The other options are either incorrect or irrelevant for this requirement. References: https://docs-previous.pega.com/case-management/87/approving-rejecting-cases-email https://docs-previous.pega.com/case-management/87/approving-rejecting-cases-mobile-devices