Maxwell died August 8, 2021. Of the following transfers made during his life, which is included in his gross estate?

1. The transfer of a whole life insurance policy on Maxwell's life to an ILIT on September 16, 2017.
2. The sale of his term insurance policy to his brother, Donald, for fair market value on July 12, 2019.
3. The transfer of a whole life insurance policy on Maxwell's life (face value $150,000) valued at $20,000 to his son on September 16, 2019.
4. A gift of $15,000 to Maxwell's sister on August 7, 2021. No gift tax was due on the gift.