My 4th grades needs HELP with (Show the possession of the subject.)the car of the principals

The principal's car

principal's shows that the car belongs to the principal.

To show possession of a subject, we usually add an apostrophe 's' ('s) after the noun. In this case, since we are talking about the car belonging to the principal, we write it as "the principal's car." This indicates that the car belongs to the principal.

To form the possessive case for most singular nouns, add an apostrophe 's' ('s) at the end of the noun. For plural nouns ending in 's', simply add an apostrophe (') after the 's'.

For example:
- The dog's tail (singular possessive)
- The teachers' lounge (plural possessive)