B. Variable: They hold something. Like a bucket. Technically, a variable is a named pointer to a location in the computer's memory where the data is stored. X or Y are variables in math. They keep track of information related to objects.
C. Functions: It is a preset type of name that is built into applications. You can built your own. There are three parts to a function; Return type, Function name, and arguments. You "call a function" when using one.
D. Methods: They instruct their respective objects to take action. You can tell a movie clip, for example, to stop playing by using its stop() method. You can write your own methods. Classes have specific methods, and inherit methods from ancestor classes.
E. Events: They are responsible for setting scripts into motion, causing them to execute. Events come in many varieties.