Final answer:
OMVIC might refuse the registration of a dealer or salesperson if they do not meet the criteria for honesty, integrity, and financial responsibility, or if they have a history of violating industry laws.
Step-by-step explanation:
The Ontario Motor Vehicle Industry Council (OMVIC) may refuse the registration of a dealer or salesperson for a couple of reasons. One of the main reasons is if the applicant does not meet the requirements for honesty, integrity, and financial responsibility as determined by OMVIC's standards. Secondly, OMVIC might refuse registration if the applicant has previously violated consumer protection or motor vehicle industry laws, which raises concerns about their ability to comply with regulations and conduct a fair business.