One of the vulnerabilities the morris worm used was a networking service called finger. the purpose of the finger service is to:
a.
report which device drivers a computer uses
b.
determine which ports are open on a computer
c.
report the status of individual computer users
d.
determine which operating system is running on a computer

C)report the status of individual computer users

Explanation:Morris worm is known as the program that replicates itself automatically and hides in the computer system.Because of the vulnerability of the system ,the worm worked as finger protocol for the gaining of the user information and status.

Other option are incorrect as the they are not the vulnerability factor for the Morris worm to work on it and thus finger protocols don't work on those option.Thus, the correct answer is option(c)

loool i m also trying to figure that out.seems like u should have genius ranking