Answer:
$0
Step-by-step explanation:
Since Jackie owns less than 2% of the stocks of Jackson 5, then all the fringe benefits that she can receive are tax free. The same applies to Jermaine and Marlon.
Only Michael and Tito would be taxed for the fringe benefits that they receive since they own more than 2% (health insurance $11,000 + dental insurance $2,000). Access to the workout facility is not taxable for any of them.