Quantitative research, most likely, because charts and tables and graphs have to represent some kind of numerical data, like amounts of things and measurements of heights or changes over time, or whatever.
A dentist uses thermal expansion in the filling of a material to a tooth since any material when exposed to heat expands in a certain degree depeding on the material. in this case, it is best that the material used for filling is more or less a ceramic one in which heat expansion is not that great to disturb the configuration of the teeth
The right answer for the question that is being asked and shown above is that: "decomposers." Bacteria and fungi break down organisms into nutrients. They are known as decomposers. They are responsible of breaking down foods and nutrients.
B. Shredding
Shredding is the only answer that has a physical change in a material, the rest are only chemical changes
hope this helps!