Final answer:
Adam's survivors, including his ex-spouse Mary and their two children, may receive Social Security benefits, while his mother Sarah could qualify for a dependent parent's benefit. A $255 lump-sum death payment is also available.
B) A lump-sum death benefit of $255
Step-by-step explanation:
Adam's survivors are entitled to several benefits under the Social Security program. Mary, as the surviving spouse caring for their dependent children, is eligible for a surviving spouse benefit to care for the children. The two children may receive a children's benefit, which is a percentage of Adam's Primary Insurance Amount (PIA). Adam's 70-year-old mother, Sarah, may be entitled to a dependent parent's benefit if she was dependent on Adam. Additionally, a lump-sum death benefit of $255 may also be payable to the surviving spouse or minor children.