Answer: D)Wheel, Axle, and Trunk are an affiliated group.
Step-by-step explanation:
Affiliated groups according to tax laws are those where a parent company owns at least 80% of the stock or the voting power in a company or in the case of multiple affiliates, the parent company must own at least 80% of one of the affiliates. This Affiliate should then own at least 80% of at least one of the others and so on.
Wheel owns 90% of Axle stock which would therefore make them affiliates. Axle then owns 100% of Tire which would then make Tire an affiliate to Axle and by extension to Wheel. Bumper is not considered an affiliate as it is only 50% owned by affiliates.