During which processes does the space between particles tend to increase?

Heating

Explanation:

Matter comprises of particles called atoms or molecules. Particles are held together by a strong force of attraction between them. The force of attraction is strongest in solids and weakest in liquids.

When matter is heated, the particles absorb the energy and start colliding with each other. The particles strike each other with force, causing the force of attraction between them to reduce.  

As the force of attraction reduces, the particles move further apart from each other causing the space between them to increase.  

you did not give any options thus this is the best answer i can give to you with this little information you have given

> they are both natural and not man made

> they can be tracked and predicted by the right tools

-love shrooms

the correct answer would be b. amelia, because the particals of gas move really fast (charged particals) and gas also has a lot of room (particals move independently) so the only answer that has both of those is amelia's.