Question

which best describes a scientific poll?
○ it is the same as a straw poll.
○ it asks questions of everyone in the universe.
○ its sample accurately reflects the universe.
○ the sample usually comes from the phone book.

Explanation:

A scientific poll uses a representative sample. A straw poll is informal and non - scientific, so the first option is wrong. Polling everyone in the universe (population) is impossible, so the second option is wrong. A scientific poll’s sample accurately reflects the population (universe) to get valid results. Sampling from a phone book is not representative (excludes unlisted, etc.), so the fourth option is wrong.

Answer:

C. Its sample accurately reflects the universe.