[Solved] Which periodontal pathogen has been found within atherosclerotic plaques? A) Streptococcus mutans B) Staphylococcus aureus C) Chlamydophila pneumoniae D) Porphyromonas gingivalis Achievement Test: An assessment designed to measure a person's knowledge or proficiency in a particular area. Mastered: Having achieved a high level of skill or proficiency in a particular area or activity. Calculus Course: An educational program focusing on the study of mathematical change, including the concepts of derivatives and integrals. Achievement Test: An assessment designed to evaluate the knowledge or proficiency of an individual in a particular area or subject they have learned.