The development of fitness tests increases what type of accountability in physical education?

Correct answer: Accountability of measurable progress and training improvement

The governing concept is fitness testing as a tool for measurable monitoring. A valid test provides baseline results and later results, so students and teachers can judge progress, identify weaknesses and modify training. Option B is correct because recorded evidence creates accountability for improvement. Options A, C and D are too narrow: praise, equipment purchases and attendance do not demonstrate changes in fitness or training quality.