The correct option is (a) .Elephant tusk is a prestigious object that was excavated from a tomb in the igbo-ukwu area.
Elephant tusk is an elongated continuously growing front teeth .
They are elongated incisors. Elephants use their tusk for digging holes and stripping bark from trees to fighting and eat, gathering food, lifting objects.
Both male and female African elephants have tusks, while only male Asian elephants, and only a certain percentage of males today, have tusks. The tusks also protect the trunk.
Tusks are used to produce ivory, which is used in artifacts and jewellery, and in other items such as piano keys. There are two main types of elephant ivory: hard and soft ivory.
Hard ivory generally comes from elephants in the western half of Africa, soft ivory comes from the eastern half of Africa. Hard ivory tusk is darker, more slender and straighter. Hard one is brittle. Ivory is a very durable material that is not easily damaged or destroyed.
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