Final answer:
The domestic production activities deduction for Silver, Inc. is $36,000.
Step-by-step explanation:
The domestic production activities deduction is calculated based on the qualified production activities income (QPAI). The deduction is equal to 9% of the lesser of QPAI or taxable income. In this case, Silver, Inc. has a QPAI of $400,000 and a taxable income of $600,000. The lesser of the two is $400,000, so the deduction would be 9% of $400,000, which is $36,000.
Therefore, the correct answer is c. $36,000.