Final answer:
The correct option is D. Fluorohydroxyapatite is the component of teeth that increases their resistance to destruction by acids and bacteria. Fluoride reacts with hydroxyapatite in tooth enamel, forming fluorapatite, which is more resistant to acid attacks. Fluoride also enhances remineralization and strengthens the enamel.
Step-by-step explanation:
The component of teeth that increases their resistance to destruction by acids and bacteria is fluorohydroxyapatite. Fluoride helps protect teeth by reacting with hydroxyapatite, the major mineral component of tooth enamel.
This reaction forms fluorapatite, which is more resistant to acid attacks and less soluble, thus protecting the teeth. Fluoride also enhances the uptake of calcium and phosphate ions in tooth enamel, promoting remineralization and strengthening the enamel.