Final answer:
Homicides make up a small, single-digit percentage of all violent crimes, so the most accurate option provided is A) 10%, but the real figure may be even lower.
Step-by-step explanation:
The percentage of all violent crimes that are homicides is much lower than the options provided. According to data from the Federal Bureau of Investigation (FBI) and other agencies, homicides typically account for a single-digit percentage of all violent crimes. The most accurate answer among the provided options would be A) 10%, although in reality, the percentage may be even lower depending on the year and specific data set.