I believe it is B! Also I am just typing this stuff because it needs to be 20 characters long for some reason! Hope this helps!
Physical change :) Hope you get it right! :D Good luck! let me know what else I can help you with. Have a great day! :D
According to the gravitational force law, force existing between two objects is proportional to the mass of the two objects and inversely proportional to the square of the distance between them. When masses are doubled each. Then the force increases 16 times.
This is triggered by an activity known as heliotropism, or solar tracking. Special motor cells at the bases of the flowerbuds shrink or enlarge as they absorb water, which moves their faces toward the sun.