Final answer:
To arrange the words in alphabetical order, 'able' comes first, followed by 'accident', 'actor', and 'add'.
Step-by-step explanation:
To arrange the words 'add', 'accident', 'able', and 'actor' in alphabetical order, you need to compare the first letters of each word. In this case, 'able' comes first, followed by 'accident', 'actor', and 'add'. Therefore, the words arranged in alphabetical order are: able, accident, actor, add.
Learn more about Alphabetical order