Promoting a prospect’s content on social media is a customer-centric approach that can be used by the sales rep to engage with a prospect at a greenfield account on a digital platform, because it shows that the sales rep is interested in the prospect’s work and values their expertise. This can help to build rapport and trust with the prospect, and create an opportunity for further conversation and relationship building. Upselling to a prospect at an existing account or sending an email with content links to a prospect are not customer-centric approaches, because they are more focused on the sales rep’s own goals and interests, rather than the prospect’s. Upselling to a prospect at an existing account is not relevant to a greenfield account, which is a new account with no prior relationship or history with the sales rep or the company. Sending an email with content links to a prospect may be seen as spammy or intrusive, and may not capture the prospect’s attention or interest. References: Certification - Sales Representative - Trailhead, Sales Rep Training: Customer Engagement - Trailhead