Answer:
A. Be sure that all possible alternatives and states of nature (beginning on the right and moving left) are included in the tree.
Step-by-step explanation:
Decision tree is a simple data mining approach used to establish the hidden knowledge in the data to enable classification and prediction.
Decision tree is a tree structure, where internal nodes denote a test on an attribute, each branch represents the outcomes of the test and the leaf node represents the class labels.
Decision Trees are excellent tools for helping management to choose between several courses of action and simplify management decision making.
If the above is true then we must be sure that possible alternatives are included in the tree.