Answer:
I think the answer is the first one
if I am wrong im sorry
speed of sound (m/s) = 331.5 + 0.60 T(°C) For example, the speed of sound in air is 386 m/s at 100 °C. The sound of speed in air is increased by 0.60 m/s for each increase of degree in air temperature. The speed of sound is faster at higher temperatures because molecules collide more often.
In all honesty, these are all fairly important, but the most important one is probably A, showing up and being on time
Answer: Wednesday marks the arrival of the fall equinox, bringing the first day of the season to the Northern Hemisphere. Starting Sept. 22, the days will become shorter than the nights until the winter solstice in December, when the days become longer again.
