The candidate should not select an answer without first reading all of the possible choices. One option may appear at first glance to complete the equation, but a better answer may be present among the other options. The option that best completes the equation should be chosen. There is only one valid option for every equation.
A word may have more than one meaning. The candidate should consider all possible meanings of a word. The word digit, for example, may mean a finger or toe, or a number. In addition, a word may be one part of speech in one context and another part of speech in another context. For example, the word table can be a noun or a verb.
If the candidate is unsure about the correct response, he or she can narrow the possibilities by eliminating those that definitely do not complete the equation and guessing from the remaining options. The more options that can be eliminated, the higher the chances of guessing the correct answer.