The correct answer is (a).
A transfer of property for the benefit of an unborn person made directly is valid. This is because the unborn person is considered to have an interest in the property from the moment of conception. The transfer can be made by will, deed, or other means.
Option (b) is incorrect because a transfer of property for the benefit of an unborn person made directly is not void.
Option (c) is incorrect because a transfer of property for the benefit of an unborn person made directly is not voidable.
Option (d) is incorrect because a transfer of property for the benefit of an unborn person made directly is not necessarily a good or a forsighted move. It depends on the specific circumstances of the transfer.