Answer:
Weight must not be confused with the mass of an object which is a fundamental property of the object expressed in kilogram (kg). Therefore, the mass of an object on the Moon remains the same as its mass on Earth. But its weight gets less because the gravity on the moon is less than on the Earth.
The answer is C because since David is going to run, and he is doing quad and hurdler's stretches, the stretch is meant to make the legs more flexible.
In this situation you should report what you have seen, get an adult to deal with the problem. You would not want to interfere yourself, just because it could be hazardous.
As for the partner question, just find anyone else to answer and write what they say
Because pain hurts and the human body don't like the pain