Kenya has a pile of salt on the counter. she uses a pinch of it for a meal. which of the following physical properties of the salt changes?
density
shape
solubility
thermal conductivity

B. Shape

Explanation - When salt is dissolved in water or food then its physical properties changes keeping its chemical nature same. When salt is added to food then its shape changes. From its solid state, it comes to a dissolved state thereby enhancing the flavor of the food and diminishing other flavors.

Salt when added to the food, reduces the water activity of the food thereby allowing the food to last longer. Salt also draws water from the food making it more concentrated.

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.