Here's how to tell the difference:
Preposition:
* Function: It shows the relationship between a noun or pronoun and another word in the sentence.
* Examples:
* "I went to the store." ("to" shows the direction of travel)
* "She gave the book to me." ("to" shows the recipient of the book)
Conjunction:
* Function: It joins words, phrases, or clauses together.
* Examples:
* "I want to go, but I'm tired." ("to" joins the two clauses)
* "He is too short to reach the shelf." ("to" joins the adjective "short" to the verb phrase "reach the shelf")
In your example, "TO," you need to provide a context for me to determine if it is a preposition or a conjunction.
For example:
* "I went to the store." (Preposition)
* "I want to go." (Conjunction)