Final answer:
The correct answer to the scenario provided is 'Crummey power,' which allows funds to qualify for the annual gift tax exclusion by giving beneficiaries a present interest in the trust. Hence, option (c) is correct.
Step-by-step explanation:
When funds are deposited into a trust, and the beneficiaries are notified of their right to withdraw the contribution for a specified period, such as 30 days, and they fail to do so within that time, the right lapses. This arrangement provides beneficiaries a present interest, allowing funds to qualify for the annual gift tax exclusion despite the trust itself being a future interest. This mechanism is known as a Crummey power.
It is neither a spendthrift provision, which protects trust assets from creditors, nor a limited power of appointment, which allows a beneficiary to determine who receives the trust property. It also differs from a five by five power, which involves the beneficiary's right to withdraw the greater of $5,000 or 5% of the trust annually.