If someone is found guilty of a capital offense, what is the potential punishment?

When a person is found guilty of a capital offense, the potential punishment includes the most severe penalties under the law, which specifically can be life imprisonment, life without the possibility of parole, or the death penalty. This reflects the extreme seriousness of capital offenses, which typically include crimes like murder with specific aggravating factors.

The other options suggest significantly lesser penalties which do not align with the gravity of a capital offense. For instance, prison terms of 1 year or ranging from 2 to 20 years are typically associated with non-capital offenses or lesser felonies, and a sentence of 5-99 years, while serious, still does not encompass the ultimate penalties that the law allows for in capital cases. Therefore, the correct answer accurately reflects the severity of the potential punishments associated with capital offenses.