Answer: a (19%)
Step-by-step explanation:
AI-generated answer
According to the initial study, the percentage of public accountants who changed companies within 2 years is option a) 19%.
The question is asking about the percentage of public accountants who changed companies within a 2-year period, based on the initial study. The options provided are a) 19%, b) 50%, c) 75%, and d) 90%.