It is important to label all your variables and expressions clearly because a. it will you get your equations set up correctly c. it will solve a system of equations b. it will check your answers d. it will allow you to find definitions better

 The answer is (a) it will help you get your equations set up correctly.

Step-by-step explanation: We are given four options out of which we are to check which one is the reason why it is important to label all our variables and expressions clearly.

If we do not label all the variables and expressions in a correct way, then it will be really difficult to make equations from the given information and hence we will not get our solution.

Thus, the correct option is (a).

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