If the function range switch is set at 200 vac what will the multimeter read if a measurement is made directly across both terminals of a blown fuse in a 120 vac line?

With the meter on the voltage scale you will read zero volts across the blown fuse. From the bottom terminal of the service switch fuse to ground you will read zero volts and from the top terminal of the service switch fuse to ground you will read 120 volts.

The multimeter will read 0