Sam had to mix C. equal parts of the two chemicals for the experiment.
The other options just sound wrong. You need to use an adjective here, and B, D, and F aren't adjectives. A doesn't fit either.
Answer:B NOT A D O R C IT IS BB
Explanation:I DID THE TEST AND GOT 100%
Answer:
parent power school gives you all of the classes and everything
family sensei don't give you nun but one class
B what the person does is the most helpful in decide the method of characterization