the guard soon replaced his blunderbuss is his arm-chest, and, having looked to the rest of its contents, and having looked to the supplementary pistol that he wore in his belt, looked to a smaller chest beneath his sea, in which there were a few Smith's tools, a couple of torches, and a tinder-box...

based on the context, a blunderbuss is most likely which of the following?

a.a coin
b.a flashlight.
c.a vest
d.a weapon