The correct answer is (b), void.
A gift is a transfer of property from one person to another without consideration. The gift is complete when the donor (the person giving the gift) delivers the property to the donee (the person receiving the gift) and the donee accepts it. If the donee dies before accepting the gift, the gift is void because the donee cannot accept the gift.
A valid gift is a gift that is complete and enforceable. A void gift is a gift that is not complete and unenforceable. A voidable gift is a gift that is complete but can be voided by the donor or the donee.
In the case of a gift that is made to a person who dies before accepting the gift, the gift is void because the donee cannot accept the gift. The donor cannot transfer ownership of the property to the donee because the donee is no longer alive. The property will either revert back to the donor or be distributed according to the donor’s will.