Answer:
Mumbabarire ntago njya nunva english
Explanation:
gusa amahirwe masa
Trading blocs.
Or Acronyms.
The answer is D. Gravity.
Gravity attracts objects to the surface of the Earth. Take a falling brick, for example, the brick has more mass, therefore, there is more attraction between the brick and Gravity. The brick is a solid object and is heavier as well.
Hope this helps! :)