What benefit does Ralph receive from Mary’s Social Security after her death?

Ralph receives 100% of Mary’s Social Security benefit after her death because, as a surviving spouse, he is entitled to receive the full amount of his deceased spouse's benefit. This option reflects the Social Security Administration's rules, which provide that a surviving spouse can claim the full benefit of the deceased spouse if it is higher than their own benefit.

This is a key feature of Social Security survivor benefits, ensuring that the surviving spouse has sufficient financial support after the loss of their partner. Other options do not align with the benefits available to a surviving spouse; for example, the incorrect options involve either a reduction in benefits or an outright loss of benefits, which would not apply in this scenario as Ralph has a right to claim a full survivor benefit from Mary's Social Security.