Final answer:
The line of code contains an if/else statement with three possible outcomes based on the value of the variable 'stopLight'. The keyword 'else if' is used to add more than two outcomes.
Step-by-step explanation:
The line of code provided contains an if/else statement. In this case, based on the value of the variable 'stopLight', there are three possible outcomes. The keyword 'else if' is used to add more than two outcomes for the if/then statement. It allows for additional conditions to be checked before reaching the final 'else' statement if none of the previous conditions are met. In the given code, the outcome will be 'Go!' if the value of 'stopLight' is 'green'.