Conditionals are statements that only run upon checking a certain condition. The execution changes depending upon the condition is true or false.
If Then - If a certain condition is true, it will execute the given action.
Ex: If it rains, then take an umbrella
If Then Else - If a certain condition is true, it executes the first set of actions. If a certain condition is false, it executes the second set of actions.
Ex: If it rains, then take an umbrella else don't
Wait until - The program will wait until the particular condition is true. If the condition is true, it executes the given action.