Final answer:
The total cost recovery deduction with respect to the asset for 2015 is $25,000.
Step-by-step explanation:
The total cost recovery deduction with respect to the asset for 2015 can be calculated by applying the § 179 deduction. The § 179 deduction allows businesses to deduct the cost of qualifying property in the year it is placed in service, rather than depreciating it over time. In this case, the cost of the asset is $100,000, and the § 179 deduction limit is $25,000. Since Marian made the § 179 election, she can deduct up to $25,000 of the asset's cost in 2015. Therefore, the total cost recovery deduction for 2015 is $25,000.