I need help please help me

The best answer choice is likely D.

Explanation:

Warm fronts are almost always associated with humid weather. We can eliminate options B and C because they don't really make much sense.

Cold fronts are associated with heavy thunderstorms and rain, so that eliminates option A.

We are left with option D, although I would have worded it differently.

Sorry you have to suffer through Edge ; I'm going through it too :)

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.