<h3>b. ML </h3><h3>c. M</h3><h3>d. Kg</h3>
<h3>Hope it helps...</h3>
I think the smartest answer would be C sorry if i’m writing though
Your mass will never change despite if you go to Jupiter, Uranus, Mars, Earth, or any planet.
The average velocity of Sandy is given by the total distance covered S divided by the total time taken t:

The total distance covered is

while the total time taken is 2 hours + half an hour (for the rest) + 1 hour and half, so

Therefore, the average velocity is