Identify the thesis statement that is most restricted.

Classical music is the basis for most rock music.
Beethoven’s 5th Symphony has inspired many rock musicians.
Classical music is the foundation of rock music.
The counterpoint of classical music was the basis for some of the Beatle's songs.

The counterpoint of classical music was the basis for some of the Beatle's songs.

The thesis statement that is most restricted is "The counterpoint of classical music was the basis for some of the Beatle's songs."

To identify the most restricted thesis statement, we need to look for the statement that makes the most specific claim or focuses on a narrower aspect of the topic.

The thesis statement that is most restricted is: "The counterpoint of classical music was the basis for some of the Beatles' songs."

This statement narrows down the connection between classical music and rock music to the specific musical technique of counterpoint and its influence on some of the Beatles' songs. It does not make a general claim about classical music as a whole or its overall influence on rock music.