Correct option is D
The correct one-word for the given group of words is (d)
boomerang.
A
boomerang is a curved flat piece of wood that can be thrown so that it will return to the thrower; used as a weapon or toy by Australian Aboriginals.
Example: He skillfully threw the boomerang and caught it as it returned.
Meanings of other options:
· (a)
harpoon: A barbed spear used in hunting whales.
· (b)
cutlass: A short sword with a slightly curved blade.
· (c)
slingshot: A small hand-powered projectile weapon.