Who may be eligible for the beneficiary's Social Security benefits upon their death?

The option regarding children under 18 being eligible for a deceased beneficiary's Social Security benefits is correct because the Social Security Administration provides benefits to children who are dependent on a deceased parent. This includes biological children, adopted children, and in some cases, stepchildren. The benefits are designed to support these minors financially after the death of a parent, recognizing their dependence and need for support during their formative years.

Spouses are also eligible for survivors' benefits, but since the question focuses on who may potentially be eligible specifically in the context of children, this reinforces the importance of recognizing the status of minors in relation to Social Security provisions. Other relatives like siblings, aunts, and uncles do not qualify under the same terms as dependent children, further emphasizing the unique position that children hold in this scenario.