S6. In the last sentence of the passage, the phrase "these tools" refers to S6 .

A．He was given a chance to Vienna.
B．He met Mozart for the first time.
C．He supported his family by his performance.
D．He became a second court organist.

A．On the job market.
B．At their former schools.
C．In their homes.
D．At the local high schools or colleges.