Explanation:
An elastic band is hung on a hook and a mass is hung on the lower end of the band. When the mass is pulled downward and then released, it vibrates vertically. The equation of motion is given by :

Where
s is in centimeters
t is in seconds
Velocity of the particle, 

Acceleration of the particle, 

Hence, this is the required solution.
What’s the problem what do u need help on
they get their energy from photosynthesis, so the answer would be (B) the sun
2. Is right..... if not then go with 1