Final answer:
Joseph incurs a realized loss on the conversion, and Justin receives the building with a basis equal to the donor's adjusted basis.
Step-by-step explanation:
The tax consequences with respect to Joseph's and Justin's adjusted basis are as follows:
A) Joseph incurs a realized loss on the conversion, and Justin receives the building with a basis equal to the donor's adjusted basis.
Joseph converts a building from personal use to business use, which results in a realized loss. The adjusted basis of the building is $50,000, but the fair market value is now $40,000. Since the fair market value is lower than the adjusted basis, there is a realized loss for Joseph.
When Justin receives the building as a gift, his basis is determined by the donor's adjusted basis, which is $50,000. Therefore, Justin receives the building with a basis equal to the donor's adjusted basis.