Final answer:
Michael Jordan won the slam dunk contest twice, in the years 1987 and 1988.The correct option is B.
Step-by-step explanation:
Michael Jordan has won the slam dunk contest twice. His high-flying acrobatics wowed audiences and judges alike in 1987 and 1988, where he showcased iconic dunks, such as the free-throw line dunk. These victories are part of what cemented his reputation as one of the greatest basketball players of all time.