Which of the following is an example of a preposition?

The correct example of a preposition is "Above." Prepositions are words that typically indicate relationships between elements in a sentence, specifically in terms of direction, location, or time. In this case, "above" describes a spatial relationship by indicating that something is at a higher position relative to something else.

While "to" also functions as a preposition and indicates direction or destination, "above" is specifically an example of a position relation. The other options do not fit the description of prepositions; "and" is a conjunction used to connect words or phrases, and "because" is a subordinating conjunction used to introduce a clause of reason. Since prepositions help establish connections in terms of location and position, "above" serves as a strong example.