Final answer:
Charlie realized a loss of $70,000 as a result of the foreclosure.
Step-by-step explanation:
Charlie realized a loss as a result of the foreclosure. To calculate the loss, we compare the fair market value of the cabin ($150,000) to Charlie's adjusted basis ($220,000). Since the fair market value is lower than the adjusted basis, Charlie has a loss. The loss is the difference between the two values - $220,000 - $150,000 = -$70,000.
Since Charlie received no money or other property as part of the transaction, this loss is the amount that Charlie realized as a result of the foreclosure.