Final answer:
The basic load of ammunition for the M16/A2 Rifle is 210 rounds, divided into seven 30-round magazines.
Step-by-step explanation:
The basic load of ammunition for the M16/A2 Rifle is 210 rounds. This is divided into seven 30-round magazines, with one magazine loaded in the rifle and six additional magazines carried by the soldier. This allows for quick reloads and sustained fire during combat situations.