Answer:
To prevent from getting injured.
B. A copper wire with rubber insulation
<span>It's close to the sun without much atmosphere, so it's characterized by </span><span>very extreme temperatures.
Happy studying ^_^</span>
Explanation:
Peroid-Time taken to make 1 oscillation
Frequence-Number of oscillation made in 1 second
Amplitude-The maximum distance from a tough and crust