Which of the following are considered aggravating factors in a criminal offense?

The use of a deadly weapon is considered an aggravating factor in a criminal offense because it signifies a greater level of danger posed to the victim and the community during the crime. When a deadly weapon is involved, it not only raises the severity of the offense but also demonstrates a higher degree of intent and culpability on the part of the offender. This can lead to harsher penalties as the use of a lethal instrument indicates a willingness to inflict serious harm or even death, thereby increasing the perceived threat and seriousness of the crime.

In the context of the other options, while factors like the victim’s age or the type of property involved may be relevant in assessing the crime's nature or context, they do not typically elevate the offense to the same degree as the use of a deadly weapon. Lack of prior convictions is usually seen as a mitigating factor rather than an aggravating one, as it suggests that the offender may not have a persistent history of criminal behavior, which could lead to lighter sentencing rather than an increase. Thus, the presence of a deadly weapon stands out as a direct aggravating circumstance, justifying more severe legal consequences.