Answer: a. To take advantage of the per donee annual exclusion.
Step-by-step explanation:
One motivation for preferring the gift method when transferring property within the family group by gift or at death is to take advantage of the per donee annual exclusion.
It should be noted that the annual exclusion is referred to as the amount of money that can be transferred from one individual to another individual as a gift and in this case, a gift tax won't be charged on such gift.