Which term describes tooth decay?

• A. Cystoscopy
• B. Dendrites
• C. Dentist
• D. Dental

Answer: (D)

To understand this, recognize that dental refers to anything related to teeth. Tooth decay is a condition that affects the teeth, so the word that best describes that domain is dental. You’d commonly say dental caries when talking about decay, linking the condition to the teeth. The other terms don’t fit: cystoscopy is a bladder-focused procedure, dendrites are parts of nerve cells, and a dentist is a person who treats teeth, not a descriptor of the decay itself. So the term that describes tooth decay in this context is dental.