Which plasma protein is described as the most abundant?

1. Plasma proteins fall into three major groups. 2. The three major groups of plasma proteins are named in order. 3. Albumin is the most abundant of the plasma proteins. 4. Globulins and fibrinogen make up the other two groups. _Source: OpenStax Anatomy and Physiology 2e (CC BY 4.0), Ch 18 'The Cardiovascular System: Blood', sections 18.1-18.6_