Answer:
$0 gain/loss
Step-by-step explanation:
donor's basis = $4,000
market value = $3,000
selling price = $3,500
Since Susan acquired the stocks by gift, her basis for loss will be $3,000 (fair market value), but if she made a gain when selling them, her basis for gain will be $4,000 (donor's basis).
Susan's gain = $4,000 - $3,500 = $500
Susan's loss = $3,000 - $3,500 = -$500
since they offset each other, there is no gain/loss.