What must be true about lifting suits in terms of their approval?

Lifting suits must be from an approved list to ensure they meet the specific standards and regulations set by the governing body of powerlifting. This requirement helps maintain fairness and safety in competitions, as it ensures that all equipment used by competitors is tested and deemed appropriate for performance and safety. The approved list is often provided by the organization's officials and signifies that the suit has undergone scrutiny for quality, adherence to design specifications, and compliance with powerlifting norms.

Using suits from an approved list makes it easier for referees and competition organizers to verify compliance during events, ensuring that all athletes compete on a level playing field. The other options do not align with the governing principles, as self-manufacturing does not guarantee adherence to quality standards, no prior approval creates inconsistencies in equipment standards, and purchasing from any store does not ensure the equipment meets the required regulatory approvals.