Which marketing strategy focuses on encouraging potential customers to share their email for discounts?

The correct choice is Sales Promotion. This marketing strategy is specifically designed to increase customer engagement and incentivize purchases through short-term incentives. In this case, encouraging potential customers to share their email addresses in exchange for discounts is a typical sales promotion tactic. It creates a win-win situation where customers receive a benefit, while the business gains access to contact information for future marketing efforts.

Public Relations, on the other hand, is more focused on managing the public image of a company and creating a favorable impression, rather than direct incentives for customer data. Advertising typically involves paid media placements to promote products or services, and while it may drive attention to discounts, it does not specifically focus on collecting customer emails. Selling and direct marketing strategies may involve direct communication with potential customers, but they are generally broader in scope and do not specifically target the act of sharing an email for discounts.