What must be proven for a first-degree forcible sex offense?

For a first-degree forcible sex offense, it is essential to establish that there was the presence of a weapon or serious injury. This element indicates a higher level of severity and violence in the act, which is critical in classifying the offense as first-degree. The inclusion of a weapon or evidence of serious injury signifies that the victim was subjected to a significant threat or actual harm, elevating the nature of the crime and reflecting the seriousness with which the judicial system treats such offenses.

In contrast, the other options do not align with the requirements for establishing a first-degree forcible sex offense. Involvement of a child focuses on different categories of sexual offenses, while verbal agreements and mutual consent suggest scenarios where there is an absence of force, negating the elements required for first-degree charges.