In what order do you put these in a tank to mix them properly: Soluble powders (SP), Wettable powders (WP) and Flowable (F)?

To mix the substances properly, you should follow the steps in option C. First, fill the tank between 1/4 to 1/2 full, then add the wettable powders, followed by the flowable and finally the soluble powders. This sequence helps to prevent clumping and ensures that all substances are effectively mixed. Option A is incorrect because adding the wettable powders first may cause clumping when the other substances are added. Option B is incorrect because beginning agitation before adding all substances may not evenly mix the powders. Option D is incorrect because adding the soluble powders before the fill tank is 1/4 to 1/2 full may cause clumping and ineffective mixing.