Question

what does the word phonograph mean?
an old machine that records and plays sounds
an old machine that measures temperature or heat
an old machine that shows images and drawings
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Explanation:

The word "phonograph" is related to sound. The first option is about images (like a kind of visual - showing machine), the second is about temperature/heat (a measuring machine for those), and the third option "an old machine that records and plays sounds" matches the etymology and function of a phonograph. The root "phono -" is related to sound (from Greek "phōnē" meaning sound), and "graph" means to write or record. So a phonograph is a device that records and plays back sound.

Answer:

an old machine that records and plays sounds