How does one identify a qualified referee in competition?

A qualified referee in competition can be identified primarily by their official uniforms and the IPF identification they carry. The International Powerlifting Federation has specific guidelines for referees that include the use of a standardized uniform, which often features the federation's logo and colors, ensuring that they are easily recognizable during competitions. The presence of IPF identification further validates their authority and status as trained officials, indicating that they have undergone the necessary training and certification to officiate at events.

The other choices do not align with the established criteria for identifying qualified referees in powerlifting. Height or audience preference does not determine a referee's qualifications, and while the color of the referee's uniform can vary, the consistent marker of identification remains the official attire and identification that affirm their role within the competition.