Question

bena thinks that dissolving more salt in water causes the mixtures freezing temperature to change. which is the best type of scientific investigation for bena to use to study this? an experimental investigation, because it can provide the most data a comparative investigation, because it uses a wide range of variables an experimental investigation, because it allows for the control of variables a comparative investigation, because it would take the least amount of time

Explanation:

Bena wants to study the effect of salt - water concentration on freezing temperature. In an experimental investigation, variables can be controlled. By varying the amount of salt (independent variable) and measuring the freezing temperature (dependent variable) while keeping other factors constant, she can determine the relationship. Comparative investigations are more about comparing existing data or different situations without strict variable control.

Answer:

an experimental investigation, because it allows for the control of variables