Question

1. read paragraph 1 from \hard facts.\ whats more destructive to teeth than fire, extreme cold, or desert heat? read on to find the answer. how does the structure of the introduction relate to a central ide the passage? a description demonstrates the problems of tooth decay. b comparison and contrast states the topic of tooth decay. c question and answer helps lead in to the topic of tooth decay. d statement of a problem suggests a solution to decrease tooth decay.

Explanation:

The introduction asks a question ("What’s more destructive to teeth...") and then invites readers to "Read on to find the answer," which is a question - and - answer structure. This structure is used to lead into the topic of what is destructive to teeth (likely tooth decay). Option A is incorrect as there's no description of tooth decay problems. Option B is incorrect as there's no comparison/contrast. Option D is incorrect as there's no statement of a problem with a solution. Option C accurately describes the structure's relation to the topic.

Answer:

C. Question and answer helps lead in to the topic of tooth decay.