The part of the tooth that bears the force and resists the friction of chewing is option(d) i.e, enamel.
The tooth's delicate exterior is enamel. The toughest tissue in the human body is this hard shell. The portion of the tooth's crown that is visible above the gum line is covered in enamel. Enamel is translucent, so light can pass through it.
The mineral calcium phosphate, which is structured in the crystal structure hydroxyapatite, makes up enamel. Calcium carbonate is used to make sea shells. Both teeth and sea shells are more intricate than they would initially appear (as are pearls, for that matter).
The wear-resistant exterior of the teeth is made of dental enamel, the body's toughest component. It creates an insulating layer that guards the tooth against physical, thermal, and chemical pressures that could harm the delicate tissue in the underlying dental pulp.
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