What is the term for using explosive or deadly weapons while committing a crime?

The correct term for using explosive or deadly weapons while committing a crime is armed robbery. This designation indicates that the individual not only committed the crime of robbery, which involves taking property from another person, but did so while possessing a weapon that could cause significant harm or death. The presence of a deadly weapon elevates the seriousness of the offense, making it a more severe crime often punished with harsher penalties.

In the context of other options, aggravated assault generally refers to an attack with the intent to cause serious bodily harm and perhaps involves the use of a weapon, but it does not specifically denote the taking of property as robbery does. Felonious assault also involves the intent to cause injury or harm, often with a weapon, but again lacks the element of theft associated with robbery. Extortion, on the other hand, focuses on obtaining money or property through coercion or threats, rather than through the direct use of weapons during the act. Therefore, armed robbery accurately captures the element of using deadly weapons in the context of committing a theft.