Answer: a. $0 as to both Skylark Corporation and Quail Corporation.
Step-by-step explanation:
This scenario is handled by U.S. Code ยง 332 - Complete liquidations of subsidiaries because Quail is a subsidiary of Skylark Corporation.
Under this code, no loss or gain is to be recorded when a company receives property from another company as a result of a complete liquidation of the latter. Quail is being completely liquidated so its property will not count as a gain to Skylark.