Here's why:
* Definition of a preposition: A preposition is a word that shows the relationship between a noun or pronoun and another word in the sentence.
* How "without" works: "Without" indicates the absence of something. It connects a noun or pronoun to the rest of the sentence, showing that something is missing.
Example:
"She went to the party without her friends."
In this sentence, "without" connects the noun "friends" to the verb "went," showing that the friends were absent from the party.