Final answer:
The minimum passing grade for Minnesota boiler exams is generally 70 percent, but it's best to consult the current regulations for the most accurate information.option b is correct
Step-by-step explanation:
The minimum passing grade for Minnesota (MN) boiler exams is a crucial piece of information for those pursuing a boiler operator's license in the state. This type of exam is typically associated with engineering fields and occupational certification. According to various resources and the context provided by the question, we can deduce that the passing grade is a specific percentage. While your question doesn't specify the exact percentage for MN, in many certification exams, a common passing threshold is 70 percent.
However, since professional certification standards can vary by state and governing body, it is always best to consult the most current Minnesota boiler exam regulations or guidelines which can be found on the official state or educational department websites to get the most accurate and up-to-date information.